Jellien Squidward was created after Jellien Patrick jammed a Jellien through Squidward's mail slot. Then, the Jellien consumed him. Thus, Jellien Squidward was born. After that, on the next day, Jellien Squidward took Squidward's place on the register at the Krusty Krab, serving other Jelliens with Krabby Patties without mayonnaise. However, one of the customers wanted mayonnaise, to which, Jellien Squidward and the other Jelliens viciously hissed at the lone customer. Jellien Squidward was defeated after SpongeBob and Sandy took down the Evil Alien Jellien Overlord.
Like most other Jelliens, Jellien Squidward behaves much differently from the original. First off, Jellien Squidward seems to smile a bit more than Squidward and most of the other Jelliens except for Jellien Mr. Krabs. Jellien Squidward is also known for his "Rah!" like catchphrase, and says it usually after he serves his customers Krabby Patties without mayonnaise. Also like Jelliens, whenever someone mentions mayonnaise, he reacts hastily, knowing it's his true and only weakness.