The Protector
Vital statistics
Name Sentinel
Race Zetonian
Home Planet Zeton


"Like his freedom-fighting Robo Force buddies, SENTINEL™ is always ready for a knock-down, drag-out fight! He has a permanent laser gun which tilts out of the top of his head. Just in case things really get hot, SENTINEL™ also stores two weapons in his ever-ready back pack. The team driver, SENTINEL™ can put the COMMAND PATROLLER through moves that nobody has ever seen before. SENTINEL™ is a new breed of robot soldier who's capable of inventions, as well as actions, that are necessary for the team's survival." From the original file card.[1]

Character HistoryEdit


Sentinel/Enemy head concept art

"The original Sentinel has always been one of my favorite Robo Force characters, sporting a compact yet sleek look to its core body design. The new Sentinel (shown above), was designed to hopefully evoke that classic 80's structure, but also allow for maximum customization potential.

On a related note, as we were working on the Robo Force parts it became pretty clear that with a little pushing and pulling, the head geometry of Sentinel and Enemy could be connected, resulting in a reversible design that could also serve as chest armor for Hun-Dred. The whole figure is kind of a Mecha Puzzle.

Having an already established cast of characters adds a different dimension to the process of making a toy, especially a property like Robo Force. The Toyfinity/Onell teams absolutely wanted to make sure that we honored the classic toy series, yet incorporate brand new elements that would give the modern figures options that did not exist before. Had the classic Robo Force toys perhaps featured some more modular parts, the experience of playing with them might have been a more creative and long lasting one. I do still love those old mech-frigerators, though.

It can be a bit of a tightrope redesigning something that fans of the original hold dear, and I know that all of us involved in bringing Robo Force back put everything we had into the project, because we are those very fans."[2]


Origin: Enemy the DictatorEdit


Battlestar's Guardian of Celestia


A page from the Toyfinity Robo Force comic book featuring the Rust Rain of Zeton

The unexpected activation of Maxx Zero - and his subsequent defeat of Hun-Dred - caused a change in Nazgar’s long-term plans. Subjugating the Zetonian robots and finding a Z-Core to prolong his life had brought Nazgar to Zeton; now opportunity had presented him with a functioning machine - a working Z-Core. All he had to do was catch him.

The problem was, the Cult of Dred did not have a standing army. The Conquest Destroyer was staffed by a skeleton crew of technicians and the Carren – not a warrior among them. The advanced weapons capabilities of Maxx Zero, as well as the unknown energy abilities of ZEM, would be difficult to overcome. The initial answer came from the enslaved Zetonians; Nazgar’s "rust rain" had erased their minds and reduced them to a simple set of commands. A Zetonian robot-construction facility was converted into a factory to build the machines of war. Each mechanoid was stripped down and outfitted with a new unified face and rudimentary Zetonian weaponry. With a set of new internal commands created by the Cult of Dred, these new Guardian robots were sent out to find Maxx Zero and destroy him. However, the limited mental capacity of the Guardians – running a program which did not give them much independent thought – was a major hindrance, along with the available raw materials for weapons on Zeton yielding only basic blasters. Nazgar tasked the Knight with finding him the perfect prototypes off-world to create a new group of elite soldiers.


Enemy the Dictator

The Knight of Darkness used his abilities to step between the bonds of reality to cross the dimensional barriers in his search. His second stop was inside the fortress of the sinister ECROYEX INITIATIVE, home of powerful cyborg beings bent on universal destruction. A crack team of Darkness Shadow Troopers and the Knight himself slew the Ecroyex warriors, discovering a great prize among their war machines: a new type of mechanical warrior bristling with weaponry.

This new ENEMY for Maxx Zero concealed double cannons in his chest, complimented with powerful arm blasters and a devastating retro-blaster concealed in the rear of his head. Given more substantial programming than their predecessor Guardian robots, Enemy and his partner-in-evil ROBO FORCE’S SENTINEL THE PROTECTOR were given a special "Ultra Silver" laser-reflective armor coating and directives to bring back Maxx at any cost. Going against their programming, Enemy and Sentinel pursued Maxx into the wastelands beyond the city of Z-Celestia, beginning a journey which would last many years to come...[3]

The Search for Maxx ZeroEdit

Fangar 20and 20Friends 203 201024 original

Fangar, Imperious Maxx, and Demonslither

After a devastating loss to the Robo Force team, Maxx Zero abandons Zeton to grieve over his lost friend. Months go by when ZEM has a vision of Maxx terrorizing a planet of bat creatures. Sentinel, ZEM, and Wrecker take to the Star Falke to planet Diavolus to investigate.

There they find Maxx has modified himself into a golden metallic warlord with little regard for biological life. There is also a new non-Zetonian robot with Maxx, the slithery Fangar the Conspirator.

Robo Force is faced with a horrible decision - do they join their commander in his new mission and forget liberating Zeton from Nazgar, or uphold his previous ideals and destroy him to save the native populace?

The Great HuntEdit

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Surrounded by Hunter Neo Zeroids

The long battles on Diavolus were over... Maxx Zero and the Robo Force had gained new friends in Neo Zeroid Assassin and Zeroid Striker, as well as a new mission: find the Prime Zeroids and unlock the secrets of planet Zeton!

The journey took Maxx, his second-in-command and hotheaded brother-in-arms Sentinel the Protector, Assassin, and Striker deep into sections of the galaxy untouched since the explorations of the STAR Team generations before. The signal of a Zeroid Sensor Station drew the Force's attention; Assassin demanded they investigate, in case any Zeroid was still functioning on the planet.

Deep in the foliage of a jungle planet, the Robo Force discovered a forgotten tribe of HUNTER NEO ZEROIDS...

Led by the first-constructed of Zeroid Zemo himself, Zemorian. Burnt-out circuitry and faulty memory chips had driven Zemorian into a paranoid state. He believed that any visitor to the planet was trying to take their jungle away - and would have to prove their claim to the planet by undergoing Zemo's test - the Great Hunt.

Stripped of their weapons, Maxx and the team must once again find a way to prevail over a superior foe - another impossible mission for the Robo Force!

Darkness FallsEdit


Darkness Soldiers appear!

But there was a greater problem on the horizon... What the Hunters did not know was that another group had tracked their signal - a group that believed the resurgence of the Zeroids would lead to the destruction of the universe. And so, it was time for the shroud of Darkness to fall once again.

The DARKNESS SOLDIERS entered the jungle with simple orders - bring back any mechanoid powered by a Z-Core (the energy source at the heart of the Prime Zeroids AND Maxx Zero) and destroy the rest. Who will survive this conflict of wills in the primal elements of a planet untamed by technology or men? The Hunters? The Hunted? Or a literal legion of Darkness?[4]

The Hunter's ChallengeEdit

Arjox profile

Arjox with his hard light weapon

Zemo had built Zemorian using the modular Neo Zeroid technology developed after the Prime Zeroids escaped from the planet of the beasts. As children are apt to do, Zemorian disagreed with his "father" over the specifics of the Great Hunt - any entities they came across were their prey, where ZEMO believed more in the purity of hunting evil creatures to hone their skills.

Zemorian stole a ZEM Saucer and twenty blank Explorer Neo Zeroids, escaping into the universe. Eventually, they found a jungle planet to settle on, awaiting those who would participate in the Great Hunt.

Zemorian built the Explorer Zeroids to their original specs, later granting those who made a successful kill in the hunt a second form. This was made all the more difficult, as one of the main tenets of being a Hunter was only using the magnet blaster to create spiked weapons and not as a blaster.

Hovertank mk2

Shadow Warriors Hover Tank created from fallen Neo Zeroids

Explorer mode Zeroids used a specific module as their head, containing most of their brain technology. The dome worn on the Explorer head was mainly ornamental when compared to Zintar's original body, so Zemorian made the dome into a weapon: a deadly cutting disc which could be thrown in the hunt. The chest emblem worn by the Explorers became a mohawk of sorts for these second form Hunters, signifying their passage into Hunter status.

After the Darkness Soldiers were thwarted in their crusade to destroy the Robo Force, Maxx left Zemorian and the Hunters to their own devices. One Hunter wanted more though. Arjox saw the insanity of his creator, asking Maxx if he could join the quest for the Prime Zeroids. Maxx agreed, the Robo Force gaining a new member.[5]

The White of X'Arb'eaEdit


Robots in storage at the facility, coated in a base white paint

Maxx Zero and the Robo Force have been following the path of the Prime Zeroids ever since meeting Assassin and Striker on Diavolus. It is Maxx's belief that Zintar the Explorer holds some long-lost knowledge about ZETON and how Nazgar can be defeated for all time, leading the Force on a quest throughout the stars.

After leaving the jungle planet of the Hunter Zeroids and adding Arjox to the team, Maxx continued upon the path he felt would lead to Zintar. It was along this path that the planet X'Arb'ea lay. Sensors in the Star Hawk notified Maxx that unique metals from ZETON were housed in the scientific outpost. Imagine his surprise when he found hundreds of half constructed Zetonian robots in storage at the facility, coated in a base white paint...[6]

The LegionEdit

After Maxx Zero and the Robo Force defeated the Darkness Soldiers on the jungle planet of the Neo Hunter Zeroids, Nazgar called upon the Knight of Darkness to send a more powerful group of warriors to defeat Maxx. The Knight called upon a special division of his Darkness Soldiers known as the Legion.

Traveling in groups of five, the Legion is primarily used to infiltrate fortresses on worlds Nazgar wants crushed. The Legion would be the backbone of a special trap for the Robo Force...[7]

The Robo Force TrapEdit

"A cache of non-activated Explorer Neo Zeroids has been found by Nazgar's troops. Using the biological weapon known as the Nazareen, these Neo Zeroids will serve as a trap for Maxx Zero and the Robo Force. But when Sentinel discovers the secret of the Nazareen, he performs Dynagenesis on the infected Zeroids and creates an army of Protectors!"[8]

Sentinel's Last StandEdit

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Sentinel Transmission

Transmission incoming...
  • "Maxx, I'm sorry. I thought-"
  • "They-"
  • "A LEGION-"
  • "If there's time. If there's somehow time...."
  • "It was a trap. Don't activate t-"


"He has been by Maxx Zero's side since almost the beginning. SENTINEL THE PROTECTOR is like Maxx's brother. And he is dying. The Ultra Silver covering given to him by the Cult of Dred has been stripped clean and a fatal wound delivered to his internal power supply. Sentinel's blue internal light is fading... his circuits go offline. Sentinel is gone.

What a mechanical being sees during its time in shutdown mode varies greatly from machine to machine. Some report nothingness - it is either activated or non-existent. What Sentinel saw when he was shut down in this case was a shimmering metallic orange robot - the robot which shared his model and configuration, Vanguard the Warrior. Vanguard... he who had been destroyed in battle months before and was the catalyst for Maxx's journey to find the Zeroids.

Sentinel looked at his brother-in-build, knowing that this was something beyond the life that had existed before. He was not a shining ghost as Vanguard was. Sentinel was a pale white specter, fading from existence. Vanguard laughed, the booming laugh he had used during his existence. Sentinel tried to speak but could not. Vanguard pointed at Sentinel with his shield arm - Sentinel was aware of a pink glow starting at his center, pulsing with strong energy.

And it was then that Sentinel lived again. His colors had changed to a base white with many highlights in color throughout his body. Sentinel's internal readouts detected a new option in his multi-function arms... Sentinel watched as his arm transformed into a powerful new weapon which he sensed could defeat the Nazareen. He charged into battle, letting loose a primal scream as Sentinel finally realized his destiny..."[9]




Hunter EditionEdit

Standard forty-one piece fully Glyos-compatible Robo Force kit. Matches the recent Ultra-Silver Glyos and Kabuto Mushi releases exactly. Hunter Sentinel was released on March 23rd 2014 along with Deluxe Genesis Wrecker.[13]

Classic EditionEdit

Standard forty-one piece fully Glyos-compatible Robo Force® kit, with all-new premium paint applications (no detail lines)! Add this classic character to your collection at last! Released on September 25th, 2016. $35 each. A blank white edition was available for $15 each.[14]

Additional ModesEdit

Sentinel RegenesisEdit

"Check out one crazy ROBO FORCE's Sentinel the Protector of Robo Force build created by Matt Doughty."[16]

Protector-Class Glyaxia DroneEdit

"Maxx has to infiltrate Glyaxia to rescue ZEM!"

Glyaxia Command has used ZEM's knowledge to build Glyaxia Drones in the form of a Protector-class robot.



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