This is just Girl and just Skins.
based on Marine.

To apply this Skin, You must need This 2 mods in EtG.

1. Mod The Gungeon
2. Sprite Replacement Extension Mod

Install mod the gungeon and apply the sprite mod in Mods File.
and after execute game once, dfsprites and sprites folder is added in Resource folder.
just put the skins in that folder, and test it!

Or requires this two things.

1. Mod the Gungeon
2. Custom Characters Mod

Put in the CustomCharacterData folder and apply it.

this skin is based on Marine, so when you applied, Marine character will disappear.
and Punch-out Graphic is unstable. so just ignore that.
Find the fit mod files!

This mod Include this thing......

1. Normal Character
2. Armored Character
3. Punch - Out Graphic
4. Boss cut scene

(+ Translation is unstable)