Arena Waddle Dee

Arena Waddle Dee is an orange Waddle Dee that appears only in Kirby Super Star

Kirby Super Star
Arena Waddle Dee appears in The Arena" sub-game in Kirby Super Star. It's not an ordinary Waddle Dee, though as it has higher health than usual, so it is slightly hard to defeat. However, the easiest way to defeat the Arena Waddle Dee is to simply swallow it.

Kirby & the Amazing Mirror
In the sub-game, Boss Endurance, a Waddle Dee with a higher health appears and many say it's the same Arena Waddle Dee from Kirby Super Star. However, when it is hit, a health bar appears with the name saying "Waddle Dee", indicating that this isn't the same Waddle Dee.