User blog comment:Andrew0218/Red vs Giygas. Monstrous Rap Battles/@comment-25144949-20150207201132

Chucky vs Annabelle (possibly feat. Slappy the Dummy?)

Mothman vs Human Centipede

The Nilbogs (Trolls 2) vs The Cannibals (Wrong Turn) (connection: groups of weird cult creatures from series with poor reception)

Sonic.exe vs MARIO

Bowser vs Hades (connection: beings of high status who love kidnapping women)

Jeepers Creepers vs Creeper from Minecraft

Cerebus vs Ghidorah or The Wither from Minecraft

Shrek vs Don't Hug Me I'm Scared (connection: simple children's characters that later got blown out of proportion)