Tunneling version, meant to "swim" through the earth with it's boring drills and emerge like a sea serpent.
Quadruped version. Note the Chitauri soldiers marching near it's feet.
Upright walking version.
Avengers: Endgame : Chitauri Leviathan Walker
Variants on the Chitauri Leviathan from the original Avengers film. Designed as giant lumbering Kaiju to appear in the climactic battle. They were eventually deemed too large. My friend Jerad Marantz designed the smaller Chitauri Gorillas seen in the film.