Gravity falls oc

I have succumbed to my desire to make ocs..... It was wonderful and horrible at the same time.

Whelp, this is Lars. He is an old friend of Wendy's who is coming back to visit for a few days. His appearance can be extremely intimidating at first, but he's the sweetest guy you'll meet.  He likes motorcycles, peacocks and the weird things in Dipper's book. Lars's favorite music to listen to is a metal band "Skull Fancy" which he only listens to because it mainly composes of a flaming skull in a top hat screaming for 3 minutes. He thinks it hilarious.

When Lars comes to town and starts hanging out with Wendy, a certain someone jumps to conclusions that he's after her heart. Robbie starts making plans to break apart something he thinks is happening. At some point he is bitten by a weird looking bug with supernatural abilities, then things start going hay-wire. Robbie is glowing and even more irritable than before, if that's even possible, and his main target is Lars. After a while, and a couple overturned cars, it is found out that Lars isn't in anyway interested in Wendy. Now, Robbie originally didn't believe him until he told him he was already in a relationship.
With a boy.