Marvel Studios is getting ready to close out Phase 5 with Thunderbolts*, opening the door for the Marvel Cinematic Universe to debut one of its most dangerous players. After having spent years building it up, the MCU timeline is finally ready to assemble the Thunderbolts, bringing some of Marvel Studios' morally greyest people together under the direction of Valentina Allegra de Fontaine. Thunderbolts* features returning characters like Yelena Belova, Bucky Barnes, John Walker, and Ava Starr — but its most valuable player is a newcomer known as Bob.