Instagram/Steven Yeun Celebrity Will Steven Yeun return to the MCU? The actor opens up about his Thunderbolts exit and his surprising openness to a future Marvel role. April 2, 2026 AceShowbiz - Steven Yeun's future in the Marvel Cinematic Universe has remained uncertain since his departure from the film Thunderbolts, but recent comments suggest he remains open to returning to the franchise. Yeun exited the Thunderbolts project before filming began, a move that left fans wondering whether his Marvel journey was over.