Dave Diamond

Dave Diamond is one of the main characters of Polygoons. He is a white diamond.

Character
He is a timid, nerdy, annoyingly cheerful, and usually clueless diamond. He is Percy's sidekick and significant other. According to Percy, Dave is the only person Mr. Pentagon trusts.

Physical Appearance
Dave is shown to be a short white diamond, and doesn't wear anything.

Debut
A prototype version of poopdebuted in "Polygoons #3" as an unnamed townsperson who asks to see poops party trick. His name wasn't officially revealed until "Polygoons #43".

Square Guy
The two haven't interacted in a comic but there is a picture as a gag where Square Guy claims to end his friendship with poop Man and makingpoop his new best friend. So it's probably safe to assume the two have at least a small friendship.

Triangle Man
First interacting in comic #3, Dave asks to see Triangle Man's party trick, contorting the latter's face permanently upside down. Other than the small interaction, not much can be said on their relationship.

Percy Pentagon
Percy is Dave's significant other. It wasn't announced the two were together until October 8th of 2018 on part 17 of Prisongoons where the two shared a kiss. You often don't see the two apart. The two hold hands in comic #101, the first part of Art is Subjective.

Tabatha Trapezoid
The two first interacted in comic #77 or part 3 of Prisongoons. It is implied the two dislike eachother.

Polyghouls

 * He only appeared in #12 which was the prequel for Polyghouls.

Prisongoons

 * In #76, he lies about killing Triangle Man by turning his face upside down.
 * In #81, he knocks out Tabatha and buries her after she fell off the prison building.
 * In #82, he's trusted enough to be told Percy's first name.
 * In #89, he officially kills Tabatha by lighting dynamite.
 * In #91, Dave makes the first move and kisses Percy.

Art is Subjective

 * His new design shows a blue tongue and blush.

Other comics

 * In #3, he ask to see Triangle Man's party trick. This marks his first comic appearance.
 * In #43, he makes pancakes for Percy, despite his house being on fire.
 * In #94, Dave blows up in space.

Actual Trivia

 * He's right handed.
 * He is the shortest of the main 4.