The Incredible Hulk animated series has a range of excellent ... indomitable spirit of the Hulk and foreshadows a burgeoning Avengers team-up.

Hulk joined the Avengers and gained an aura of respectability, After his self-imposed exile on Sakaar in Thor: Ragnarok and his near-death battle with Thanos in Avengers: Infinity War, Banner has ...

But the reason why that Shang-Chi cameo is important has nothing to do with the Hulk surprise. That post-credits scene tells us that the Avengers are still working together and assessing new threats.