He is a flying cat created by Tinky Winky using the Wa-Machine. Tac Nayn is the only Wa-creature without the word "Wa" on his name because Po said that it is better if his name is Nyan Cat reversed. So Tinky Winky named him Tac Nayn instead of WaNyan-Cat. His original fate was to fly around in Hell for all eternity, looking for victims to kill. However, Tinky Winky gave his creation as a gift to the nazi warlord, and since then Tac Nayn has been a loyal servant of Adolf Hitler.