Voice actors surely have a hard life .. when they lend their voice to a character from a series you like very much, they represent this character. No matter who they will voice in the future, they will always stay this very first character you know them from.
And … that is why I can’t take Thor serious.
He is Goku. FREAKING SON GOKU - I’m sure, when he is about to lose Mjölnir again, he’ll blow everything away with a Genkidama x’DD