It is not known to evolve into or from any other Pokémon.
Along with Terradon, Searine, Tornadowl and Aethera, it is one of the five Legendary symbols of Rikoto.
It seems to be based of a Manticore, a Persian legendary creature similar to the Egyptian sphinx that proliferated in western European medieval art as well. It it is sometimes portraye having body of a lion and a tail of venomous spines similar to porcupine quills, while other depictions have it with the tail of a scorpion. While Tigacore is not a Poison Type nor learns Poison Moves Naturally, it does have a pointy tail similar to the Manticore. Tigacore could also be a reference to some possible Satanic Cultures from the color scheme and it's forked tail also resembles a Pitchfork.