Conversation so far:
is plankton from spongebob a zooplankton or phytoplankton
Plankton from SpongeBob is an intellectual planktonic copepod.
who is the character plankton married to
Plankton and Karen are the married owners of the unsuccessful Chum Bucket restaurant.
what is plankton's goal
Plankton and Karen often devise schemes to steal the secret Krabby Patty recipe, but their efforts are always thwarted by Krabs and his employees.

Question: is the character all evil
Self-contained rewrite: is plankton all evil