Eggplant Ministers are passive and cannot damage the player in any fashion.
Stomping on an Eggplant Minister will squish them, reducing their height by a third and to the same level as that of the player's. They return to their original state after enough time has passed. Eggplant Ministers vocalize a soft, baritone, humming sound, which increases in pitch while they are flattened.
Much like Eggplups, Eggplant Ministers are immune to damage from the whip and being stomped on, even with Spike Shoes equipped. Every other form of attack, such as thrown items, held weapons, or the whip buffed by the Powerpack will harm them.
Unlike the Eggplup, jumping on Eggplant Minister gives no major vertical boost.