Who are some of the best side characters?

[Eddy Current]

It can't be a main character like George from Seinfeld, but Newman would count.

I think Han Lee from Two Broke Girls is a really good one.

[Santa_]

Bruh Man

[i_am_a_champ]

Ron Jeremy

[Elroy The Great]

han solo

[flipbjefrox]

From I’ve watched recently:
Max and Steve- stranger things
Hawk- Cobra Kai
Bobby fish (pop’s friend)- Luke Cage
Sam- Game of thrones
Toby- The Office

[flipbjefrox]

Masuka- Dexter

[$Bullsfam$]

Quagmire from family guy
Mr garrison from South Park
Uncle ruckus the boondocks
Brodie from The Wire
Chalky White and Richard Horrow Boardwalk Empire
Saul from Breaking Bad

[Tony Trick-Pony]

Ugly naked guy from Friends. Janice from Friends as well- "oh...my....God."

[flipbjefrox]

Quagmire from family guy
Mr garrison from South Park
Uncle ruckus the boondocks
Brodie from The Wire
Chalky White and Richard Horrow Boardwalk Empire
Saul from Breaking Bad

Omar for the wire

[Tony Trick-Pony]

Wendy from Breaking Bad

Badger from Breaking Bad

Skinny Pete from Breaking Bad