From Homestar Runner Wiki
In the Homestar Runner universe, characters are sometimes hired to wear mascot costumes.
"I'll chop off your legs!"
The Drive-Thru Whale Costume is the costume version of the Blubb-O's mascot, the Drive-Thru Whale. Coach Z wears this costume.
 CGNU Dumple costume
- See main article: The Jolly Dumple
The Jolly Dumple costume is the mascot costume for Crazy Go Nuts University. It is worn by Homestar Runner and made of Polymascotfoamalate.
 The Tragic Clown-dog costume
- See main article: Tragic Clown Dog
"Pictures with the Tragic Clown Dog ain't free!"
The Tragic Clown Dog is the mascot for Bubs' Concession Stand. It is worn by Strong Bad.
 Stoppy the Sign costume
"To tell you the truth, I've always enjoyed a good chafe."
Stoppy the Sign is a mascot for Strong Bad's Mount Ridesplace! USA. It is worn by Coach Z.
 Poppy the Tire costume
"We'll call 'em Poppy... Poppy the Tire."
Poppy the Tire is a mascot for Strong Bad's Mount Ridesplace! USA. It is worn by Homestar Runner.
 General Tso's Chicken costume (Ryan S.)
"It's time for taste ball!"
General Tso's Chicken (Ryan S.) is a mascot for Strong Bad's Mount Ridesplace! USA. It is worn by Homsar.
"P-squared's not with the union. He doesn't even get a break."
Pom Pom wearing a sign, advertising for Bubs' Concession Stand. He seems to fail at attracting customers, and does not get a break due to the fact that he isn't in a union.
 The Fighting Growlback
"NO! STOP! It's just me, Regular Greg!"
The Fighting Growlback is the mascot for the Growlbacks, worn by Regular Greg. D N'D Greg mistakes him for a level 4 shambling Krenshar and attacks him.