What If #9- Happy Days Avengers!

In which X7 travels back in time to the 50s. Here he finds a group of heroes calling themselves the Avengers! However, this is an Avengers the world had never seen before, made up of a robot, a humanoid gorilla, a goddess, a super smart man and a living robot! Hmm, maybe we have seen Avengers like this before! Find out who these Avengers are! Special points to anyone who knows why we used this music.