Read more about Mento at: Wikipedia

Official Site: DC Comics

Mento is a fictional superhero published by DC Comics. He first appeared in Doom Patrol #91 (November 1964), and was created by Arnold Drake and Bruno Premiani.

Steve Dayton, one of the world's richest men, builds a helmet to enhance his mental abilities and calls himself Mento. This is an attempt on Dayton's part to impress Elasti-Girl (a.k.a. Rita Farr) of the Doom Patrol. Although his arrogant manner annoys the male field members of the team, he is successful, and in Doom Patrol #104 (June 1966), Mento and Elasti-Girl are married. They soon adopt Beast Boy (a.k.a. Garfield Logan). After Elasti-Girl's death, Mento becomes involved in the hunt for her killers, General Zahl and Madame Rouge.

In Swamp Thing #49-50, Steve is recruited by John Constantine for a small gathering of powerful beings, in order to assist in a battle taking place in hell. The demonic forces are facing an entity that could easily overwhelm and destroy them, even with the aid of Heavenly beings. Using Mento to get a 'read' on the situation, John assists the battle with magical power. Despite the defeat of the entity, Sargon the Sorcerer and Zatara burn to death and Mento is left insane. (This was before Swamp Thing and John Constantine switched into Vertigo continuity and the event has subsequently been referenced in several regular DC universe comic books.) Shortly thereefter, Dayton, now in a wheelchair, resumes his Mento identity and lashes out at Garfield Logan, blaming him for the deaths of the original Doom Patrol. He then proceeds to create his own team, the Hybrid, to challenge the Teen Titans. After multiple encounters, the members of the Hybrid defy Dayton and join the Titans in curing him. Raven cures him of his madness and he seems to discard the helmet.

Much later, Dayton hires Deathstroke the Terminator to find the Titans during the Titan Hunt. Afterwards, he becomes and tries to frame Deathstroke for murder, but Dayton's dual identity and plans are revealed and Deathstroke is cleared of all charges. 's plans also involved nuclear bombs placed across the country, but this is neutralized by a large gathering of superheroes, mainly current and former Teen Titans members.

Mento has not been a contender in any CBUB matches.