The title of strongest Avenger is often contested among powerhouses such as Thor and Hulk, but it actually belongs to someone else: Hercules, the Prince of Power. Even the God of Thunder and the Jade Giant would both have to agree with that.
Hercules is one of the many Marvel heroes based on characters from classic mythology, and after Thor he is the most successful one. He debuted in Journey into Mystery Annual #1 in 1965, where he immediately goes toe to toe with Thor, with the battle ending in a draw (an impressive feat, considering how powerful the son of Odin is). After that, Hercules' path crossed that of the Avengers several times until he was made a full-time member. Herc's love for adventure and his desire to test his strength in battle made him the perfect fit for the Earth's Mightiest Heroes and his tenure with the group lasted for a very long time, until the Onslaught event and the following Heroes Return in the 1990s. Herc is still a trusted ally and friend of the Avengers, but he follows his own path, which led him to associate with Amadeus Cho and, more recently, with the Guardians of the Galaxy.
Related: Loki Names One Avenger Strong Enough To Kill Thor (And It's Not Hulk)
Hercules and Thor are friends and battle brothers, but they have also clashed many times, as superheroes tend to do, and gods even more. Despite Thor's incredible powers, Hercules has proven to be his match, and their fights usually end in a draw. In Thor #126, the two gods clash and it is Herc who comes out on top (but Thor has his power restrained by Odin). In Thor #221, Thor initially seems to have the upper hand, but that fight ends without a clear victor. However, when Loki is looking for a warrior strong enough to beat his
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