#garr

For starters, Garthe doesn't die at the end of Goliath Returns because he's too cool to die

While wandering around trying to plot his revenge, he discovers the remains of KARR and decides that he needs to rebuild him as part of his plan

Garthe fixes up KARR, and together, they go to get revenge on their goody-two-shoes twins

Cut to them causing trouble (we could probably get a good 2-3 episodes of this)

Somewhere along the lines, they both realize that Michael and KITT aren't the actual problems just symptoms of the problem that was Wilton Knight

Anyway, the actual logistics of how they figure this out is unimportant because this is all just the lead up to:

THE CRASHOUT OF THE CENTURY

While I think that KARR would be relatively normal about all this, Garthe is absolutely losing it

After all the fight has left him, Garthe decides to go to Devon, one of the few people who really knew his father and knew his situation

Devon is (understandably) ready to throw hands when Garthe suddenly appears in his office, but it doesn't take long for him to notice that this is not the same Garthe that has been terrorizing the Foundation, this is a man that has lost control and is desperately reaching out for help

After some discussion, Devon agrees to help Garthe get a second chance at life with a clean record

Garthe decides to get rid of his father's name and use his mother's maiden name instead. His new name is Garthe Bishop

Devon is still wary of Garthe and what he'll do with this new life, but to everyone's surprise, he goes to university and majors in theater education (opportunity for cute "KARR supporting Garthe as he goes through college"/"KARR not understanding college" moments here but we don't have time to dig into specifics)

Once he graduates he gets a job as a theater teacher for a local high school and he runs the drama department like the navy

Students are super intimidated by Mr. Bishop when they first meet him, but it doesn't take long before they realize that he's actually super chill

Garthe knows what it's like to not have a great support system and he's more than willing to be there for these kids (he consistently has at least 3 students eating lunch in his classroom on any given day)

For this next part it's important to note that this AU is a part of a larger AU in which Michael and KITT have raised a kid together (my friend and I have sorta decided that somehow they ended up raising Mike from KR 2008 but don't worry about it)

Anyway, once Mike gets to high school he decides to take the theater class with Mr. Bishop

Garthe gets his class list for the year and sees he has a student named "Michael 'Mike' Knight" and he is trying not to freak out about it, because surely this is just a coincidence, Michael is a common enough name and surely there are other people with the last name Knight

Until he meets his new student and sees how he behaves for five minutes and, yup, there's no denying it, that is Michael Knight's kid alright