Grovyle, unlike even their first from of Treecko and their evolution of Sceptile, are renowned far and wide for the extreme loyalty they show to their trainers. It seems at first as though they reward every act of kindness, but they do not, for they also suffer through cruelty without a second thought. When abandoned, they will search far and wide until they inevitably return to their trainers; when traded, they will be baffled by the concept and do likewise; many an unscrupulous trainer has "traded" a Grovyle in this manner.
In war, Grovyle protect their trainers to the end. They use the sturdy leaves on their arms to block swords, arrows, and bullets alike, then leap up to allow their trainers to strike back while they shoot seeds from the air. If badly wounded, they attempt to cover their trainers with their body, hoping that they can hide them until the battle ends. They are not suicidal, but if an attack seems as though it will slay their trainer, they do not hesitate to sacrifice their lives. Many have surmised that what they fear is not dying per se, but no longer being able to protect their trainer because of their death.
Yet while few Grovyle will flinch at risking their lives, most would still balk at altering the flow of time so that they never existed to begin with. Yet they strive to live up to their greatest hero, a Grovyle who was and was not, for it is not a part of this stream of time. A Grovyle who not only convinced the Dialga it defeated and saved to revive its trainer, but who also saved time itself.