Thanos

Thanos is a former infiltrator for both the Heroslayerz Club and the DeathDay Syndicate, the false main antagonist of the Hospital Arc segment of The Pact: Endgame 2 and a supporting character turned one of the main protagonists of the arc onwards. He was advertised as the Mastermind’s true identity due to his role in the Decimation that led to the Endgame film as well as the main antagonist of the arc (alongside Pikachu who previously served as a surprise villain in Summer Edition 4: Stuck On Lockdown) but it was a misadvertisement campaign to hide the true main villain.

Appearance
He resembles his MCU counterpart exactly.

Personality
At first, he was a highly deceptive and arrogant individual who is willing to break the Myles Bots’ spirits in order to get his way. However, this is revealed to be all a front to gain the villains’ trust. In actuality, he is well-meaning and a terrible communicator. He also shows empathy for the Myles Bots as he himself had lost everything he held dear.

Trivia

 * Thanos was marketed as the main antagonist of the Hospital Arc as well as the Mastermind’s true identity due to his involvement in the upcoming Avengers: Endgame film. The twist reveal that Thanos is a hero all the way unlike his MCU counterpart whose fate is completely determinant depending on what happens in the Avengers: Endgame film is hidden from any and all promotional material though he is portrayed in a more comedic light in contrast to Richard’s Mastermind alias.