From PokéHeroes Wiki
Froslass is the evolution of Snorunt.
Froslass was also introduced as a new mega-able Pokémon as part of an update on 27/May/2017.
|EHP:||EXP to level 100:|
|Egg group:||Mega Capable:|
Froslass can Mega Evolve into Mega Froslass if its level 50 + holding a Mega Stone.