Quick answer — Marie Ooi voices Karen in SPY x FAMILY, Casey in SPY x FAMILY Season 2, Hahaoya in Ranking of Kings: The Treasure Chest of Courage and 4 more characters.
Marie Ooi voices Karen (SPY x FAMILY), Casey (SPY x FAMILY Season 2), Hahaoya (Ranking of Kings: The Treasure Chest of Courage), Sachiko (Ron Kamonohashi's Forbidden Deductions), Touko (Children of the Sea), Yankee Joshi B (My Deer Friend Nokotan), Olive Wise (Fluffy Paradise).
Karen is voiced in Japanese by Marie Ooi.
