Based on his voice, I believe he is in the 30's. Since he attended High School with Squiddy, 40's may not be impossible.
As he wins most of the time, proving his superiority, I would say at least 45.
Tom Kenny (also known as the voice actor of Spongebob Squarepants)
Squillium Fancyson III
Squilliam Fancypants .
He hates the people in Bikini Bottom, especially Squilliam.
Fancyson
spongebob and patrick or squillium whatever u prefer
:) squilliam is voiced by Dee Bradley Baker No.... Alton Brown! What R U Talkin` `Bout?
Tom Kenny (also known as the voice actor of Spongebob Squarepants)
Squidward's brother's name is Squilliam Fancyson. He is a wealthy, successful musician and often serves as a source of envy for Squidward, who feels overshadowed by his brother's achievements. Squilliam is known for his flamboyant personality and is featured in several episodes of "SpongeBob SquarePants."
Squillium Fancyson III
Squilliam Fancypants .
1. SpongeBob 2. squilliam 3. mr. crabs 4. Patrick
He hates the people in Bikini Bottom, especially Squilliam.
Well, if he is fancy, he must eat fancy things such as caviar or hor'd'urves. In the episode of "House Fancy" (Spongebob) you should have seen his house. Based on that, that's pretty much obvious.
Fancyson
One.
hrrrrrrrrrrrh