Risen from the Glass Ocean and receiving world class assassin skills from before your time in Hell, you’ve become a Neon. Neons are masked, stark white beings that are given color coordinated code names, and forced by the ‘Believers’ to eradicate the Demons infesting Heaven. As a regular Neon, you have a particular relic or memento from before your death that acts as your base Soul Weapon, alongside your physique being enhanced to slightly supernatural levels.
On top of your personal Soul Weapon, you can obtain varying Soul Cards that spawn around you while in combat which have dual abilities. The main ability being a random Spiritual Weapon (usually a ranged weapon) with limited ammunition, and the second ability (which when used, destroys the card) being an esoteric effect like a controlled supersonic dash, leaping high into the air, shooting a concentrated explosive which while harming enemies- only boosts your momentum in a particular direction, and more.
Your Neon color and mask are usually representative of certain personality traits you had while alive, but you may optionally choose to select the color and form they come in. Your Neon mask may be removed at your leisure, and unlike in the game, it is not rigged to explode.