Anjaneyasana is the son of the Wind god but he is also half human.
In the form as Anjaneyasana he is only a child.
When he chased the sun because he thought it was a delicious mango, the sun god became angry and made him fall to the ground. Thus he broke his jaw and he died.
His dad became angry with the sun.
Anjaneyasana was reborn, but taken away from his mother.
Now the monkey god had to take care of him. Therefore, he was embodied as a monkey. His new name was Hanuman.