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Looking for the green duck one— an idea is Dynamite Dux, a side scrolling Beat Em Up released to arcades, Atari ST, Commodore 64, and Sega Master System, which Bean the Duck came from. But that's the one guess I got, I think it might be something else, since your description sounds familiar.
Wiki also has a list of Duck characters— there's only two listed. I'm going to hedge my bets on Dynamite Dux, unless someone has something better.
Edited by AsuyukaI have a vague idea of what the duck game is (and no, it's not Dynamite Dux), but unfortunately I don't remember the name either. All I can say is that I'm fairly sure it's a Genesis exclusive - you could probably find it by poking around on Sega-16
. I think it has a page on this very wiki, but I couldn't find it.
A duck with a baseball cap and striped shirt? I think you're thinking of Socket
.

Ok, so, I'm looking for these two old games. If memory serves they were from the SNES/Genesis era, maybe at the tail end—ironic I would say "tail" sense both were Sonic clones.
They were both about "fast animal" type mascots, and one of them was a green duck with a baseball cap, striped shirt, shorts and sneakers on; the other was a manic looking weasel with spiky hair, his tongue hanging out, a yellow jersey, shorts and sneakers.
If I recall from the old print ad, the weasel one had a simple like a wheel on fire as his logo, if that helps at all. They came out during the 90s glut of platforming mascot games, like I said maybe at the tail end of the fad.
Thanks in advance for any help guys!