PokemonUnboundPokedex.com

Crystal Peak (Large room on 1F after using Surf)

In wild Pokémon encounters, the successful deployment of Roar results in an immediate battle conclusion, initiated by either participating Pokémon. However, in Trainer battles, Roar does not have any impact. Roar boasts an accuracy rate of 100% and adheres to the standard priority rules. There exists a potential for Roar to falter if the user's level is lower than the target's level. The likelihood of this failure ranges from approximately 10% to 25%, contingent upon the relative levels of the two Pokémon involved. Typically, the probability of failure becomes more pronounced when the target's level significantly surpasses that of the user. The failure chance is determined as follows.