TAV=Terra, Aqua, Ven (other arrangments might be seen but they all mean the same.)
MX= Master Xehanort
ME= Master Eraqus
DS= Dark Soldier, now known as Vanitas (some like to call him Van)
SoD= Seeker of Darkness, also known as Xehanort's Heartless or Ansem (not to be consued with Ansem the Wise)
VTLTW=Virtual Twilight Town
TLTW=Twilight Town
EoTW= End of the World
TWTNW=The Worldthat Never Was
CO= Castle Oblivion
CoW= Chamber of Waking
CoR= Chamber of Repose, previously known as Room of Sleep
BBS= Birth by Sleep
HB= Hollow Bastion
DC= Disney Castle
BWHoPL= Being With a Heart of Pure Light
LS= Lingering Sentiment
PoH= Princess of Heart
SRK= Sora, Riku, Kairi
SDG= Sora, Donald, Goofy
RAX= Roxas, Axel Xion
SRM= Sora, Riku, Mickey
IKK= Inverse Kingdom Key (the Keyblade from the Dark Realm used by King Mickey)
KK= Kingdom Key (The Light Realm Keyblade used by Sora)
WtD= Way to the Dawn (Riku's Keyblade used at the end of Kingdom Hearts 2 not be confused with the Soul Eater used in the beginning of Kingdom Hearts 2 and before)
KH= Kingdom Hearts
OC= Olympus Coliseum
ES= Enigmatic Soldier
MDG= Mikey, Donal, Goofy
MTAV= Master of Terra, Aqua, and Ven
Org.= Organization XIII
FM= Final Mix
FM+= Kingdom Hearts 2 Final Mix+
SE= Square- Enix (could also mean Soul Eater, which is Riku's Kingdom Hearts and early kingdom Hearts 2 weapon)
FoKH= Future of Kingdom Hearts
KH3= Kingdom Hearts 3
SE= Soul Eater (could also mean Square- Enix, but the Soul Eater is Riku's Kingdom Hearts and early Kingdom Hearts 2 weapon)
HU= Heart Unlocker (the Keyblade created from 6 of the 7 hearts of the Princesses of Heart Aurora, Cinderella, Alice, Belle, Jasmine, and Sleeping Beauty but not Kairi)
RoTS= Ruler of the Sky (Neverland's Final Boss in Kingdom Hearts 358/2 Days)