Okay so it turns out the voice actor for Arthur Watts in RWBY is also ALL MIGHT'S VOICE ACTOR FOR THE NEW BNHA MOVIE

XD Also Mineta' voice actress is the same one as Juvia's in Dragon Cry

Tenya's voice actor is the same as Klein's in RWBY and RWBY chibi and Acnologia's in dragon cry

Momo's voice actress is the same as Hawkeye's from full metal alchemist and full metal alchemist the brotherhood and Erza's from Priestess of the phoenix

And Fumikages voice actor plays Tyrian from RWBY

Please note that these are all the english voice actors but isn't it cool ^^