MindChamber doesn't hesitate to deliver the killing blow on Gigantor when survival is on the line.
Alien-Snatchattack[]
Carrot Clock[]
In the production logo for Alien-Snatchattack, MindChamber is shown holding Carrot Clock in his hand. Since the game was a collaboration between their respective creators, and the logo includes the phrase "Made wif luv four Newgrounds.com," this cameo suggests a friendly relationship between the two mascots and reflects their creators’ collaborative tribute to the site.
Alloy: Arena[]
PsychoGoldfish[]
In the production logo for Alloy: Arena, MindChamber appears posing alongside PsychoGoldfish, with both characters offering the player on how to play the game with a gamepad. Their joint appearance reflects the cooperation between their creators during the game's development and, like MindChamber's cameo in Alien-Snatchattack suggests a close bond between the two mascot characters.
Warriors of the Portal[]
Captain[]
When MindChamber wakes up along in a underground maze, he and the other fighters in the maze are instructed that he and the other warriors have no choice but to fight one another to the death. With no option but to fight to the death, MindChamber, like the others, shows no hesitation and immediately engages in battle.
At one point, Captain and his ally Steve seize the arm cannon from a defeated P-Bot and turn it against MindChamber. As Captain mocks him, they fire the weapon, engulfing MindChamber in a massive blast. Despite the devastating attack, MindChamber manages to survive.
| Character | Dialogue | Notes |
| Captain | "Say 'ah', sunshine!" | Spoken during Warriors of the Portal at around 2:20. After saying this, Captain fires P-Bot's arm cannon at MindChamber. |
Gigantor[]
MindChamber and Gigantor are the last two combatants standing in Warriors of the Portal. As the maze walls recede, the two enter a coliseum and face off. Gigantor feints a distraction, landing a surprise punch on MindChamber. Recovering, MindChamber counters with a headbutt and a German suplex, then follows up with a series of brutal attacks—stomping Gigantor’s face, slamming him by the tail, and hurling him into the coliseum wall.
Gigantor retaliates by slamming MindChamber’s head against the wall and throwing him across the arena. As MindChamber recovers, Gigantor lands a punch to the face, dazing him. Despite severe damage, MindChamber defiantly gives Gigantor the middle finger. In response, Gigantor insults MindChamber and tears open his chest. Wounded but not down, MindChamber dodges a spear thrust, tackles Gigantor, and drives the spear through his hand. He mounts Gigantor and lands several punches before grabbing his face, glowing with energy.
At this point, the animation branches into two alternate endings. In the first, MindChamber unleashes a burst of energy from his hand, blasting Gigantor in the face and killing him. In the second, Gigantor overpowers him, and pierces MindChamber’s head with the spear, delivering a fatal blow.
| Character | Dialogue | Notes |
| MindChamber | N/A | While MindChamber does not speak, he gives Gigantor the middle finger. |
| Gigantor | "Puke oil, douchebag!" |
Red Knight (Warriors of the Portal)[]
Red Knight is the first opponent MindChamber fights in Warriors of the Portal. MindChamber takes advantage of his size difference, and is able to overpower Red Knight, grabbing him by the head and slamming him against a wall before crushing his skull in a bloody mess.
As Warriors of the Portal was not developed with the involvement of Tom Fulp, Dan Paladin, or any official members of The Behemoth, the creators of the Castle Crashers franchise, this encounter should not be considered an official crossover or canon interaction.
Pico (Warriors of the Portal)[]
If MindChamber is the last fighter standing and kills Gigantor, Pico appears, applauding his victory. Pico then reveals himself as the mastermind who trapped all the fighters in the maze. He smugly declares that, with every other contender eliminated, nothing can prevent him from claiming the title “King of the Portal.” Enraged, MindChamber lunges at Pico just as Pico draws his gun.
As Warriors of the Portal was not developed with the involvement of Tom Fulp, the creator of the Pico franchise, this encounter should not be considered an official crossover or canon interaction.
| Character | Dialogue | Notes |
| Pico | "Hello, you and a bunch of others have been captured and locked up in this cell. Unfortunately, only one can get out of here alive. The door in front of you will open in a few moments and you have no choice but to fight to the death, until one is left standing. Good luck!" |
| Character | Dialogue | Notes |
| Pico | "Hey, thanks for doing the dirty work. You helped me a lot! And now, nobody will stop me from becoming King of the Portal!" |
Steve[]
Steve helps Captain hold onto and steady P-Bot's arm cannon, unleashing a powerful energy blast towards MindChamber.