⚙️ Grookey → Rillaboom MECHA Evolution (Full Transformation) The full mechanical evolution of Grookey transforming into Thwackey and finally into Rillaboom. A fan-made robotic reimagining of the iconic grass-type evolution line with heavy-duty hydraulic plating, reinforced titanium limbs, internal bass-boosted energy cores, and industrial-scale engineering-style transformations. From a small mechanical primate to a colossal, mobile drumming fortress. More Mecha Pokémon evolutions coming soon! 🍃