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King Amoeba is Princess Tulsa and Prince Callous' father and the husband of Queen Mildew. He is Patrick and Gary's great great grandfather. He is also Maw Tucket and Carl's grandfather. He appeared in the episode "Rule of Dumb" on a family tree. He was the King of Bikini Bottom. He was a part of Gary and Patrick's family.
- His species is an Amoeba, which makes Patrick and Gary 1/16 Amoeba because he is an ancestor of the Star family.
- He hasn't had an actual appearance in any episode, since he is an ancestor.