Unlikely team-up

Unlikely team-up is a theme used to describe events in which two or more characters find themselves in a situation where they are forced to cooperate with one another to accomplish a common goal, even though these characters would not ordinarily work together. The most common usage of this theme is to have a protagonist enter into a reluctant agreement with an antagonist. However, this may also apply to characters associating with one another in an environment wherein they would not normally share a common interest.

Protagonist/Antagonist team-ups

 * Doctor Who: The Witch's Familiar - The 12th Doctor and Missy have to work together to escape from the Daleks.

Superhero team-ups

 * Supergirl: Worlds Finest - Supergirl and the Flash team-up to combat Livewire and Silver Banshee. The team-up is unlikely because the Flash is from an alternate reality from that of Supergirl.

Supervillain team-ups

 * Supergirl: Worlds Finest - Livewire and Silver Banshee team up to get revenge on Cat Grant.