|Date of birth||July 7, 1965|
|Interests||Being better than Squidward, Bragging, Spending his money, Playing music|
|Lives In||950 King Street, Bikini Bottom|
|Occupation||Band Director, Music Teacher|
|Voiced by||Dee Bradley Baker|
Squilliam Fancyson the Third, also known as Squi Squi, is Squidward's enemy from high school. He claimed that Squidward "sucked eggs", and ever since then they have not liked each other. He is extremely wealthy, popular, and talented. However, because of his richness, he is also very selfish and mean, similiar to Squidward... Although, Squidward is not rich at all.
Squilliam appeared in the following episodes:
- Band Geeks
- Squilliam Returns
- House Fancy
- Professor Squidward
- I Heart Dancing
- Keep Bikini Bottom Beautiful
 Origin of Name
Squilliam is a combination of Squid and William.
Squilliam is pretty much similiar to Squidward, except for the fact that he wears very fancy outfits and have a Una brow in is fore head