Role added by connieblackwood on March 1, 2023
A Sub-Trope of the Odd Couple wherein the odd couple are twins, usually identical brothers or sisters (or cousins, as long as they're still using the "identical appearance, contrasting personalities" motif). Basically, Sibling Yin-Yang for twins, as there is an extra bit of irony when people born at the same time (and who usually look the same as well) are so different. They'll usually embrace using Identical Twin ID Tags to help the differentiation.
Fan Casting
Polar Opposite Twins
Join the Conversation