When it comes to Dark and Light characters, since they can never really be at a complete disadvantage, Element Penalty buffs on moves are useless to them. Though you could switch out a move, it is confusing to have a single buff that only specific types can use as if the buff was designed like a...
ROCK STAR FILIA
Palette: original (exclusive to SGM), based on Steven Universe
First Appearance: unobtainable, A.I. enemy only in 3.4 (Aug. 2019)
While Filia is alive, all teammates TAG IN with 3 stack(s) of BARRIER for 10 seconds...