- Yo-kai Watch: Main game series:
- Yo-kai Watch animation: Minor Yo-kai
Greengramps appears as a peach-skinned old man with an oval bald head and a long mane starting after the hairless zone of the hair. He wears a traditional Japanese lavender-colored robe and gray hakama. He carries a small replica of planet Earth with a green twig on the north pole that symbolizes his planet-friendly tendencies.
Greengramps recycles a lot, and cares for the environment.
Whoever is Inspirited by Greengramps becomes obsessed with helping the environment, enough that they will change their lifestyle and habits.
In the anime, both he and Greesel recycle (although for different reasons, Greesel being stingy to the point of saving money) and the two bond over that.
Greengramps can be found in grass spots on Mt. Wildwood or at the Abandoned Tunnel (East).
He can also be freed from the Dream Wheel using a Flower Excitement Coin or a Joyful Coin.
"Ecolojii" is a combination the English ecology and jii (Japanese: 爺 "old man").
"Greengramps" Uses the color "Green" (Often used to represent ecology, such as going going green) and "Gramps" (an elderly person or variant of grandfather).
- Receiving food (favorite): " Green and good!"
- Receiving food (normal): "Thanks!"
- Receiving food (disliked): " For the love of Earth!"
- Greengramps does not have his real life medal counterpart.
In other languages
- German: Opa Öko
- Italian: Nonno Verde