yeah. I self-insert as an OC. an orphaned mewni peasant, turned knight, assigned as Star's bodyguard on earth. Monsters killed his parents, so he is extremely prejudiced against them.
Despite being close in age (he's sixteen), this character doesn't like Star at all, and doesn't usually go on adventures with her or Marco. He and Star have an understanding, she doesn't tell on him for not doing his job as a bodyguard, and he doesn't tell Moon about her shenanigans. for most of S1 and S2 he just gorges himself on earth pleasures (TV, internet, games, non-corn-based foods) and hangs out with Angie and Raphael. He goes to school, but doesn't like it since he's an illiterate peasant, so he skips class to hang out with Oskar. Later in the season, he starts to respect Star, and wants to help her become a great queen. No shipping with star though, he sees her as like a younger sister.