every version Colin changes into a different thing. 1.0 was a human 1.1 was a ball with top hat and then in 1.2 was a red person with a white top hat. I have another question about Colin. and I was playing 1.2 POF right now and i got caught by rev while running and I also triggered Colin and i was close to getting caught by Colin but he had disappeared. like was it a bug in the code for Colin or was him disappearing after a certain amount of time intentional?

i can say that this also happened to me but its apparently not a bug, it happens when colin is about to change into a different spot like It's A Bully but thats only when you have perfect timing on rev.

so yea its probably normal.