Branched spark

Branched sparks are a congential issue from the IDW portion of the Generation 1 continuity family.

A branched spark is an aberration that occurs every once in a million sparks. Instead of just one spark, two are produced, and the individuals that share the branched spark experience "vicarious perception", wherein pain felt by one can be felt by the another. They are also linked in life and death—if one dies, both die.

Fiction

IDW Generation 1 continuity

Topspin and Twin Twist were a pair produced by a branched spark. Both frequently felt the other's pain, Last Stand of the Wreckers #3 and Topspin's sacrifice to activate Aequitas ultimately killed both of them. Last Stand of the Wreckers #4

Notes

• Aligned Dreadwing and Skyquake are noted to have a "split spark" in the Prime episode "Loose Cannons". However, while Dreadwing notes sensing Skyquake's death, it was not fatal for him.
• Similarly, Animated twins Jetfire and Jetstorm share mitotic sparks, though it is unknown if they experience each others' thoughts.