Great Dungeon in the Sky Easter Egg - Invisible Man?

Who is the invisible man?

The invisible man is a (hidden) playable character in the game "Great Dungeon In Sky".

How I unlock it?

Its practically impossible find it in the game and beating it because, ¡ITS INVISBLE! but, if you win the game (beating the final boss) you wil be able to unlock a character without beating it.

Where is placed in the list?

Is the last character on the list

Wow, It has very cool attacks, ¿right?

Nope, it doesn't have any attack, but its hidden!