A lot of this may have you guys disagreeing, but you can state your opinions on what animated character reminds you of each glee characters in the comments if you like. Here is my personal opinions:

Artie-Bentley from Sly Cooper

Blaine-Yusei from Yu-Gi-Oh

Brittany-Ino from Naruto

Finn-Tristan from Yu-Gi-Oh

Kurt-Haruhi from Ouran High School Host Club

Mercedes-Carmelita Fox from Sly Cooper

Mike-Naoto from Angel Tales

Puck-Mad Hatter from Alice in Wonderland

Quinn-Sakura from Naruto

Rachel-Kingyo from Angel Tales

Santana-Krystal from Star Fox

Tina-Mew from Pokemon

Sam-Tamaki from Ouran High School Host Club