What about Willy Beamish?
I remember mostly because of the frog! Although, judging by the screenshots I saw on Google, I didnt go very far in the game. Only a few looks familiar.
That was one of my favorites even though I can't stand the load times on Sega CD to ever play it again.
The game has some clockspeed bugs on DOS, though. The animations play at the correct rate, but timers that use the in-game clock will fire too fast above about a 66mHz 486 speed. This left me stuck on a puzzle for a few years, since I first got to play the game in the late 90's and it wasn't obvious that I had a bug.