Morpho Knight

The final boss of Isolated Isles in Kirby & The Forgotten Land, absorbing Fecto Forgo/ID-F86 after Kirby defeats the Forgo controlled Leongar.
Morpho Knight is the penultimate boss of the Ultimate Colloseum Z.
He is known to cast judgement on important battles by spectating as an orange Butterfly before fighting the self proclaimed winner of the fight, which is always Kirby.

Notable mention, he appears in Kirby Star Allies, more specifically Guest Star ???? Star Allies Go! Where he also appears as the final boss.

The Reborn Butterfly, Castor of Judgement, Fluttering Dream Eater, Knightly Butterfly, Dark-Winged Disaster, Fluttering Fiend, and objectively the coolest Knight, it's Morpho Knight!

D:

The emoticon used to show utter shock. The epitome of a big sad moment.

Bob: My sister just died
John: You know who else just died? My mom!
Bob: D: