Tyr is a fictional character, an Asgardian god appearing in American comic books published by Marvel Comics. The character is based on the Norse god of the same name. Along with Thor and Balder, he is one of Odin's biological sons.
Thor fighting Tyr on the cover of The Mighty Thor vol. 1, #312 (October 1981). Art by Keith Pollard.
Asgard is a fictional realm and its capital city appearing in American comic books published by Marvel Comics. Created by Stan Lee, Larry Lieber and Jack Kirby, the realm first appeared in Journey into Mystery #85. Based on the realm of the same name from Germanic mythology, Asgard is home to the Asgardians and other beings adapted from Norse mythology. It features prominently in stories that follow the Marvel Comics superhero Thor.
Asgard and some of the inhabitants of the Asgardian dimension on the cover of Tales of Asgard #1 (October 1968) Art by Jack Kirby.
Diagram showing the relationship of Yggdrasil with the nine worlds of Asgard. Art by Eliot R. Brown.