The following is a list of Clyde's transformations, what they do, and how useful they can be in speedruns.

Chicken Clyde: Gives Clyde the ability to fly. Also gives Clyde a peck attack, which is faster than his normal punches.

Barrel Clyde: Turns Clyde into an explosive barrel. The barrel can destroy stone walls, but can also damage some clones.

Sheep Clyde: Makes Clyde run significantly faster than his normal counterpart, plus Clyde can jump a lot higher as a sheep.

Frog Clyde: Clyde can swim underwater in all directions. Frog Clyde doesn't need to swim back up to the surface to get air.

Ape Clyde: Ape Clyde can climb across ceilings.

Mutant Clyde: A combination of all Clyde's transformations, unlocked by beating the game. This transformation is banned in all categories of Cloning Clyde speedruns.