Okay, a lot of requests have come in. Here are about half of the teams I have confirmed and might put in. Also, sorry to all the Undertale fans out there. I never played the game. :/

Dipper and Mabel (Gravity Falls)

Robin and Chrom (Fire Emblem)

Dawn and Ella (Total Drama)

Gumball and Darwin (The Amazing World of Gumball)

Edd and Eddy (Ed, Edd, n Eddy)

Blossom and Bubbles (Powerpuff Girls)

Pikachu and Meowth (Pokemon)

Nana and Popo (Ice Climbers)

Mario and Luigi (Mario Bros)

Here are the ones that I maybe will include

Duck Brothers (Courage)

Finn and Jake (Adventure Time)

Nino and Ricken (Fire Emblem)

Tom and Jerry

Dan and Chris (Dan vs.)

Toad and Toadette (Mario)

Lemmy and Iggy (Mario)

Link and Zelda

Steve and Alex (Minecraft)

Agent 1 and Agent 2 (Splatoon)