Also known as: ポピーブロスJr., ポピーブラザーズJr.
Poppy Bros Jr. are recurring enemies from the Kirby series that (in later games) grant the Bomb Copy Ability. They look like little clowns, and toss bombs at Kirby to attack. For the larger, mid-boss variant, see Poppy Bros Sr.
For more info, see their wiki page