Andy was a fallen one before peace was filled. He stumbled to Alphys' lab one day and was killed by an amalgamate. His body and soul was sucked into the amalgamate, giving Andy control of it. Now, he wanders Alphys' lab, looking for help every day. The picture is Andy's soul, which means corruption.
If you don't know what undertale is, don't read the desc. I got this pic from google bc I'm bad at art :3
