User blog comment:GIR 5 life/GIR'S News Blogs Of Infrequency With Zim & GIR/@comment-25263388-20150304222406

As to what you asked:
Doug vs Marky 2 please.

ERB vs Vic (InfiniteSource) and Cam (VGRB) - ERB vs two most popular fan-made ERB channels

XJ9 vs GIR is good but you seem to already have a battle for GIR, so how about Jenny vs Freddy Fazbear?

Animaniacs vs Animorphs

Ib vs Larry Daley :P

Goonies vs The Goodies - I can write for the Goodies :D

Queen Elsa vs Jack Frost (RotG)

Will Smith vs Johnny Depp

Mr Game and Watch vs Charlie Chaplin for lulz

My unrelated to your blog suggestions:
Darth Vader vs Dr Doom

Dovahkiin vs Eragon

Captain America vs Guile

Bill Nye vs Bill Bixby

Tankman (Newgrounds) vs Hitler