What happens if we set some “invalid” values in the Terraria files?

Terraria: What happens if we change a few values just a bit?
honse
discord: https://discord.gg/yJrCt9YFz5

Credits:
Thank you to FilipK (again!) for suggesting and bringing to my attention one of the things in this video
Terrasavr: https://yal.cc/r/terrasavr/
HexEdit: https://hexed.it/

Chapters:
0:00 Introduction
1:05 Value 1: Hair Style
1:40 IndexOutOfRange ERROR!
2:14 Value 2: Player Style / Skin Variant / Gender + Clothes
2:40 Hidden mannequin sprites!
3:06 Illegal player styles… why won’t it crash?!
4:23 Value 3: World NPC Data
5:04 Not So Dark Brandon
6:05 Outro

Music:
Undertale - Waterfall
OMORI - Space Road 1979
OMORI - A Home for Flowers (Tulip)

Mods and Packs:
Foundry & Alchemy (Pack) - https://steamcommunity.com/sharedfiles/filedetails/?id=2440505684
Fancy Lighting [Ultra Preset] (Mod) - https://steamcommunity.com/sharedfiles/filedetails/?id=2822950837
Stanberry Font (Pack) -
https://steamcommunity.com/sharedfiles/filedetails/?id=2559652586
Stormdark UI (Pack) -
https://steamcommunity.com/sharedfiles/filedetails/?id=2448259079
DragonLens (Cheat Mod) -
https://steamcommunity.com/sharedfiles/filedetails/?id=2939737748
Better Zoom (QoL) -
https://steamcommunity.com/sharedfiles/filedetails/?id=2562953970
Character Stats (QoL) -
https://steamcommunity.com/sharedfiles/filedetails/?id=3033200611

#terraria

Terraria: What happens if we change a few values just a bit?