The ''Unholy TideWalkers'' is a deseased Merman, they are fearsome but rarely seen. A ''Unholy TideWalker'' is created either when a Merman becomes obsessed by the ''end'' or if he is infected by an enderman (rare).
Some of them are said to still be able to controll themselves and some is said to still posses the natural powers
of a ''normal'' Merman.