Katrelba is definitely one of my favorite Gladiators to sneak into ranked battles, but a little less so now that Tofu and her thorns are everywhere.

My guess is that Helmet Kharafax is my most used Gladiator at max level, followed closely by Quora, Isgald Vorst, and Captain Katie. Karelia is still in my Top 5 Gladiators, but just barely.