Avery's Links
Tea is Avery's sibling, so they naturally want to protect her. They find her ability to remove her head charming and goofy - it's perfect for a good prank, which Avery is always down for.
Avery feeds into Tea's habit of wanting to spook someone, which is awful for everyone involved. Tea finds this really kind of Avery, and is happy to have them as a sibling.
Avery views Travis as 'the guy i should talk to when i have a stupid idea', which is almost always true. They often speak for Travis so the thief doesn't have to deal with social situations, which is much appreciated from the latter. An important sibling that Avery would do anything for.
Travis was guarded at first about Avery, but softened up as they continued to provide him the means to survive and was a major factor in deciding whether or not to move in with Avery's family. Avery's also the person who gave Travis the name he uses today, which he cherishes greatly.