Bassdrum

Bassdrum is the de facto leader of Trio de Minor, and will do anything in his power to make sure that he keeps his status. Trio de Minor is a team organized by Mephisto to gather the notes to complete the Melody of Sorrow. Like most other people from Minor Land he can't stand happy music and cringes at the sound of it.

Personality
Bassdrum is arrogant, rude, and probably has the largest superiority complex of his team. He is constantly obsessed with being the leader of the group, and while he is good with coming up with several tactics, schemes and plans to beat the Precure, his haughtiness almost always causes him to overlook several details and his efforts end in no avail.

Upgrade
In episode 26, Mephisto gives everyone in Trio the Minor new powers using his special earphones. Bassdrum's sense of smell has been greatly enhanced, as he can smell a note from far away.

His beard and hair are now more wild, spiking up at the tips. He now has purple markings on his face around his eyes, which resemble two halves of a heart. Bassdrum now has a tight green top, gray, bone-like armor on his shoulders, a red gem on his chest, and dark green pants. He is shown to be extremely buff, though it is unknown if he had these before his power-up.

In episode 37 Falsetto gives Bassdrum and Baritone new monsterous forms.

He grows immensely and takes on a new, amphibious appearance. He wears the same outfit, but his hair is more wild and spiked at the tips.