Bubble Bass (1972-2013 age 41), also known as Bubble Ass, first appeared in the episode Pickles as the main antagonist and has since then made appearances in later episodes with smaller roles. Bubble is an overweight fat shellfish idiot who trolls people and only thinks of himself. Bubble Bass died in 2013 of a heart attack due to his fat ass. He has one of the biggest fish dicks in Bikini Bottom. His last appearance before the season 8 episode "Plankton's Good Eye" was the season 1 episode "Fools in April". Why he wasn't on the show for a decade was presumably because he had a heart attack for being such a fatass.