Nandemo!? Taihoman (なんでも!? タイホマン) is a cancelled action platformer that was in development by Namco around 1995, planned to be released on the Super Famicom / SNES. A short preview of the game was also published in EGM (April 1995 issue), but in the end the game was never released in any region. It seems gameplay would have been similar to Kirby and MegaMan, with the robotic protagonist (Taihoman) being able to absorb abilities / fuse with other objects to gain new skills.
“The robot cop from a popular manga bounces into side-scrolling action! Taihoman is an unbelivably advanced mech who has been designed to combat an inept criminal syndicate. He can fuse with many devices to gain powers, line a fan to fly, a lighter to spew flames, a battery to zap foes and even a pop machine to bombard enemies with cans of cola!”
To promote the game Namco also released a Nandemo!? Taihoman manga by Taku Koide and phonecard, with a proposed anime by Sunrise that was also canned (only a pilot seems to have been seen by industry insiders).