Who was the first "Mister Terrific" (from DC) you ever read about?
For the first "[B]Mister Terrific[/B]" you ever read about, here are the possibilities to consider:[INDENT]* [b]Golden Age Mr. Terrific[/b] (Terry Sloane) - 1st appeared in [i]Sensation Comics #1[/i] (January 1942) / death of character in [i]Justice League of America #171[/i] (October 1979)
* [b]Michael Holt[/b] - 1st appeared in [i]Spectre #54[/i] (June 1997)
NOTE: not differentiating between [i]pre-[b][FONT=Comic Sans MS][COLOR="#FF0000"]Flashpoint[/COLOR][/FONT][/b][/i] and [i][COLOR="#0000CD"]New52[/COLOR][/i] versions
* [i]Kingdom Come[/i] / Earth-22 version of Mr. Terrific - 1st appeared in [i]Kingdom Come #1[/i] (May, 1996)
* [i]Liberty Files[/i] version of Terry Sloane - 1st appearance in [i]JSA: The Liberty Files #2[/i] (March 2000)[/INDENT]
NOTE: Not including [b][i]Earth 2[/i][/b]'s "Terry Sloan" (no "e" on end) of the [i][COLOR="#0000CD"]New52[/COLOR][/i] since he went by the name "[FONT=Century Gothic]Mr. 8[/FONT]" in that version.