I did my best to recreate Solaire the Warrior of Sunlight and for my first mod I think it went pretty decently

Loadout
Blasphemy
Sunlight Javelin
Shield of The Maiden
Old Knight's Flask Old Knight's Flask is strange as a starting item and it won't gain charges between floors unless you drop it and pick it back up
Ghost Bullets

Stats
3 Health
2 Armor
2 Coolness

To download and use you need Mod the Gungeon and Kyle's Custom Characters Mod
Once you have both set up put the Solaire folder into the CustomCharacterData folder and when you start the game up again you select anyone and type "character Solaire" into the console