As a Pokémon expert, I can tell you that
Venusaur, the Grass/Poison-type Pokémon, does indeed have a Mega Evolution in the Pokémon games. Mega Evolution is a temporary transformation that certain Pokémon can undergo during battle, which significantly boosts their power and often changes their appearance. Venusaur's Mega Evolution is known as
Mega Venusaur, and it retains its Grass/Poison typing. This transformation gives Mega Venusaur a unique ability called
"Thick Fat", which halves the damage it takes from Fire- and Ice-type moves.
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