Crisis On Infinite Earths: 36 Easter Eggs, Cameos And References You Probably Missed
27. Wentworth Miller's Captain Cold
Wentworth Miller has gifted Arrowverse fans with a ton of memories over the past five years as rogue-turned-hero Leonard Snart and his Earth-X doppelganger Leo, and even though he vowed that he was finished (for now), that didn't stop him from making a small cameo in Crisis On Infinite Earths... sort of.
The Waverider of Earth-74 featured an A.I. system exactly like Gideon, only this one was called Leonard and was voiced by none other than Miller himself. He often kept the grumpy old Mick company. Aw, sweet.