Nightcrawler

Real Name:  Kurt Wagner

Nightcrawler a member of the X-Men. He is dark blue of skin, demonic in appearance and possesses a prehensile tail.  He is roughly as agile and acrobatic as Spider-Man, and like Spider-Man can stick to most surfaces.  In addition, Nightcrawler can teleport to any distance within his line of sight, including via video monitors.

Nightcrawler has not appeared in any episodes of the Avengers: Earth's Mightiest Heroes, but was confirmed as existing in the continuity by being one of the heroes the Super-Skrulls were able to replicate.