Enerfly appears as a red, orange, yellow, and green butterfly. He has a long, yellow, needle-like nose. His antennae are thin and black with green, yellow, orange, and red wisps on the end. The pattern on his wings look like eyes with red irises.
Enerfly makes the inspirited energetic and makes them perform tasks to the peak of their ability. In the anime he is mistakenly said to cause good luck, when this is actually Noko's power.
Yo-kai Watch animation series
Enerfly appears in Yo-kai Enerfly in which causes Eddie to have a streak of good luck during the day. Although Eddie is initially happy, he becomes increasingly unnerved as he is certain that very bad luck will befall him as soon as his good luck ends. Nate decides to chase Enerfly away from Eddie on the pretext of cheering Eddie up, but secretly wants Enerfly's blessing for himself, and summons Buhu to drive the butterfly Yo-kai to him. Enerfly is chased off Eddie, but Buhu fails to lead it to Nate and ends up chasing Enerfly into the sky.
Nate briefly mentions of summoning Enerfly in Episode 106, but summoned Dazzabel by accident.
Enerfly appears during the day on every tree on Mt. Wildwood.
Yo-kai Watch 2
Unlike in Yo-kai Watch, Enerfly can now be found during the day and night on every tree around Mt. Wildwood. It also appears on trees or telephone poles around Sprindale.
Miraculous Scales (Japanese: きせきのりんぷん,Kiseki no Rinpun)
Does not get inspirited by enemies.
Befriended: You've got some energy! Want some more?
Receiving food (favorite): Energized!
"Zekkōchō" is a combination of zekkōchō (Japanese: 絶好調,"in perfect form; going swimmingly") and "butterfly" (Japanese: 蝶,Chō). It can be taken to mean "Ideal Butterfly" (Japanese: 絶好蝶,"Ideal Butterfly").
"Enerfly" is a combination of "energy" and "butterfly", likely named to be similar to Enefly. Its Japanese name is the same as Enefly, but spelled in hiragana instead of katakana.