If the youtube arc was SML, most of the main characters (not Mario and junior) have a SGL version
Jeffy = Scooter
Rosalina = Peach
Cody = Harry
Bowser = Tyrone
Chef PP = Chef Luigi
Shrek = Atso
Joseph = Toad
Black yoshi = Green Yoshi
Brooklyn guy = officer Top (Bottom is backup if top is absent)
The main villain in the arc is Goodman cause he's kept telling Mario to house payment and his goal is to delete all 9 main characters (not junior and Mario) out of existence by going to their debut episodesAt the finale, Goodman's team turns against him and Goodman got defeated