These Two Have Appeared In The Same Thingさんのイラストまとめ

Sohpie (Tales of Graces) and Nico Yazawa (Love Live) appeared in Granblue Fantasy together

Optimus Prime (Transformers) and Eva 01 (Neon Genesis Evangelion) appeared in Transformers x Evagellion together

Ariana Grande and Fei Fong Wong (Xenogears) appeared in Final Fantasy: Brave Exvius together

Samurai Jack and Porky Pig appeared in a Cartoon Network bumper together

Kirito (Sword Art Online) and Ranko Kanzaki (IDOLM@STER: Cinderella Girls) appeared in Tales of the Rays together

Merkava (UNDER NIGHT IN-BIRTH) and Yosuke Hanamura (Persona) appeared in BlazBlue: Cross Tag Battle together

Steve (Minecraft) and a head-crab (Half-Life) appeared in Super Meatboy together.

Larvesta (Pokémon) and Garon (Fire Emblem) appear in Nintendo Badge Arcade together.

Fio Germi (Metal Slug) and Jill Valentine (Resident Evil) appear in SNK vs. Capcom: Cardfighters together

Kratos (God of War) and Freddy Krueger (Nightmare on Elm Street) appeared in Mortal Kombat (2011) together.