BUR #5147 has been approved by @evazion.
rename eli_(mgs) -> eli_(metal_gear)
rename eva_(mgs) -> eva_(metal_gear)
rename gekko_(mgs) -> gekko_(metal_gear)
rename fatman_(mgs2) -> fatman_(metal_gear)
rename mr._x_(mgs2) -> mr._x_(metal_gear)
rename pupa_(mgs:peace_walker) -> pupa_(metal_gear)
For consistency with the other metal Gear tags that have *_(metal_gear) as their qualifier.