[1] Michael Holt showed remarkable intelligence at a very young age, reading comprehension and ability to assimilate the works of Niels Bohr, Albert Einstein, Max Planck, and Richard Feynman, a pantheon of theoretical physicists.

Inspired by Sloane's life story, Holt took the name Mister Terrific[6] and later joins the current Justice Society of America (JSA), eventually serving as its chairman.

For a time, he acted as spokesperson for Hourman's Tylerco and consulted with the company on industrial espionage and security matters, in exchange for it helping fund a youth center Terrific has started.

In the "One Year Later" storyline, Holt is still a member of the JSA, and he has also become part of the United Nations Security Council's intelligence agency, Checkmate.

[citation needed] During the 2008 "Final Crisis" storyline, the war between Darkseid and the human world leaves Mister Terrific, Cheetah and Snapper Carr trapped in the ruins of Checkmate headquarters.

Unable to get past the brainwashed metahuman, and caring for Sasha, who prefers using her OMAC programming to shut down her bodily functions rather than falling prey to the Anti-Life Equation.

Forcefully waking up Sasha, thus condemning her, Michael Holt has no choice but to activate a new OMAC population, programmed to obey him rather than Brother Eye, and to protect the last few humans against the new Justifiers.

All-American Kid and King Chimera must remain in the brownstone, Mister Terrific retreats to his lab, and the rest of the team leaves to help Wildcat.

[15] However, Scott is able to use the power of the Green Flame to slow down time around Mister Terrific's body in the hopes that he can be healed before brain death occurs.

[18] As part of DC's 2011 reboot of its continuity, The New 52, Mister Terrific received a self-titled ongoing series written by Eric Wallace and drawn by Roger Robinson.

[25][26][27] While being held captive by Onimar Synn on an adventure with the Justice Society on Thanagar, Holt first expresses his disbelief in souls and that he is uncomfortable with the notion of reincarnation after witnessing the return of teammate Hawkman.

He acknowledges the irony of this given such factors as the Spectre's role in his origin, and his encounter with the likes of the Spirit King, but he still maintains his skepticism about faith and religion.

After a near-death experience where he sees his wife and unborn child (whom he decides to name 'Terry' after the original Mister Terrific), Holt's atheism is shaken and he agrees to attend a church service with teammate Doctor Mid-Nite.

During the same storyline, the mainline Holt admits to Doctor Mid-Nite that he feels his issues with faith stem from his inability to understand it, confessing that he wants to believe but something inside him will not let him.

Michael Holt is among the smartest people on Earth, being skilled in multiple fields of medicine, engineering, science, and martial arts.

[31] He wields "T-Spheres", floating robotic spheres with multiple functions that include holographic projection, hacking into other machines, and generating energy bursts.