Chuckles (Finding Nemo)

Chuckles was one of the minor characters in Finding Nemo.

Finding Nemo
In Finding Nemo, Chuckles was a goldfish that was only seen in a picture. He was a pet for Darla, but he sadly died because Darla wouldn't stop shaking the bag he was in.

Before he was handed over to Darla, he could have been a member of the Tank Gang, as Bubbles, Deb and Bloat were mourning over Chuckles' death.

It is actually quite possible that Chuckles was faking his own death to gain freedom, like how Nemo did.