Arrancar

Arrancars are one of the seven classes available to the player once they start the game.

Overview
Although the player still can't change their character through customization, the class does give the shirt and pants used by the Arrancars in Hueco Mundo, but not the katanas.

Shikai
The users Zanpakuto changes to the Zanpakuto of the Shikai sword (which was created by the player). The multipliers for Fullbringer's Shikai ranges from 1.3 times to 2 times damage output (from estimations) and multiplies their speed by 1.35 times. This form moderately drains Reiatsu.

Bankai
Arrancar's Bankai (while also the weapon made in the character creation screen) changes their model, adding on a new "suit" to the player, which covers their feet, hands, waist, and shoulders. This form increases damage output s to 2.4 times (from estimations) and increases their speed by 1.6875 times. This form quickly drains Reiatsu.

Arrancar
If both fighters were at an equal level, then the fight could go either way. Depends on what moves they use and how they use them.

Sinner
===Hollow===