10 Strongest MCU Heroes To Never Join The Avengers

10. Loki

Loki has had a complicated history in the MCU, but has enjoyed one of the most incredible redemption arcs across his almost ten years in the franchise. Though he may have started a villain, and acted as the main antagonist for the Avengers' first team up, but he was most certainly a hero by the time he died at the hands of Thanos.

Unlike his brother, Loki's powers never really lent themselves to strength. The God of Mischief instead was blessed with abilities more centred around deception and manipulation. This doesn't mean he is not strong, however.

As a Frost Giant, Loki is almost automatically stronger and more durable than any human in the MCU, and has survived what would have killed most people. He has fought Thor multiple times and lived to tell the tale, drifted through space and didn't die, and even survived the most legendary Hulk smash ever.

On top of all this, Loki beat Captain America in a one on one battle, only losing once Iron Man entered the ring. If Steve Rogers says you pack a wallop, you must be strong!