Tom vs. The Flash #313 - 3-Way Fight for the Super-Simian/Crimson Testament

They have a sibling rivalry.

3-Way Fight For the Super-Simian
Writer: Mike W. Barr
Artists: Carmine Infantino & Dennis Jensen
Letterer: Milt Snapinn
Colorist: Gene D'Angelo
Editor: Len Wein

I felt like this once, I would rather not explain why.

Crimson Testament
Writers: Steve Gerber & Martin Pasko
Artists: Keith Giffen & Larry Mahlstedt
Colorist: Tatjana Wood
Letterer: Ben Oda
Editor: Len Wein