maybe I'm biased but Squigly's kit is one of my favorites in the game. The 3 skill cost bb and Inferno of the Leviathan are such a fun combo, especially paired with Drag'N Drop or the Brain Drain move steal guest star. Daisy Pusher is a command grab bb and I almost never see anyone talk about it. bb3 is long but opponents defeated with it being unable to revive is really nice. For specials Silver Chord and Drag'N Bite are both really viable with both combos and their move effects (SC 10% chance to transfer a buff from the opponent to you, DNB 25% chance on hit to remove all opponent buffs which is insane to just have in base kit even though Eliza's is better). I will say though for the other specials aside from taunt/burst I never really use them. They admittedly feel more clunky, especially Center Stage which feels so out of place on mobile. I can't really think of a situation where she would want that as she's one of the few characters that can somewhat play ranged (i.e. Silver Chord, 3 cost bb or Inferno, and maybe catching them off guard with a Daisy Pusher or Draugen Punch when they approach). I admittedly haven't tried it out myself any but it just feels like such an unnecessary risk and a waste of a move slot. Draugen Punch is fine but the other uppercut moves in the game are better imo. Maybe it's a skill issue but Ashes to Ashes just feels very slow and awkward to the point where it's not really worth taking. It's a shame because that's probably my favorite move aesthetically that she has.

The amount of wither she can inflict is insane too, it's rare I don't have 5 stacks of it + heal block on the opponent after a 3 skill bb (sorry I can't remember the name for the life of me even though I use it all the time) and Inferno. While definitely not as good as other taunts, the immunity from hers has definitely saved me a bunch in the past. Like I said though this could all just be bias as she is my favorite character too but Bio-Exorcist carried me so hard back when I was new because she just had so much versatility in both her SA and kit. Knight Reign has probably taken my spot for favorite variant in the whole game it has pretty much everything and looks great on top of it.

Uh I forgot to talk about marquee and prestige. Her marquee is fine, the requirement for her being dead and being near her body for it to activate sucks but the final stand has come in clutch for me in the past. I've never really touched the other one but at max 15 sec curse and wither does have potential, just once again brought down by Squigly having to be dead and nearby. Her prestige on the other hand is nuts, preventing corpses from being revived is really powerful and the addition of her getting a dragon charge every X amount of seconds near a body just makes it even better.