@ministill-t7b Goofy killed him because he wasn't going to deal with being replaced because Mickie started to only be around Donald for awhile seemingly forgetting about him I don't know everything about this but this is why he did it
Engañó a todos los demás con la verdad. Desenmascarado ahora sabes mis verdaderos colores. Solo para ti hasta que encuentres a alguien nuevo pero eso no importará... porque soy tu amigo hasta el final.
I’m pretty sure this is a different version of goofy where he’s like obsessed with Mickey or something and he snapped after Mickey made a new friend and I guess he killed Donald to show that he was obsessed with Mickey or something