Hero 108 vs Skullgirls

Connection:

Both are female brawlers from obscure franchises from 2010s that wear a sentient shapeshifting hats with horns (Yaksha and Vice-Versa respectively) that they use for battles and have also grown attached to it. Said hat use long arms/appendages to attack and once shown to dig up the earth to throw boulders

Both are known for their beauty and wore strapless tops, but aren't afraid to fight head on when needed

Both are also members of a famous group (First Squad and Cirque des Cartes respectively) that are part of an bigger organization but are on opposite sides of morality (The heroic Big Green and the villainous Medici Mafia respectively) that resides within a large country (Hidden Kingdom and Canopy Kingdom respectively)