Execute a seguinte query:

DELETE MEMB_INFO
DELETE CHARACTER
DELETE MEMB_STAT
DELETE warehouse
DELETE WZ_CW_INFO
DELETE GuildMember
DELETE Guild
DELETE AccountCharacter
DELETE ExtWareHouse
DELETE AccountCharacter

Após executar a query, todas as contas, chars, guilds serão apagadas.

Ps: Execute essa Query na Database MuOnline.