This monster's crown in its TCG artwork is the exact same crown as the one "King Fog" possesses.
This card's English and Korean names are a portmanteau of the words for "skeleton" and "angel" (except for the Italian name, which simply means "Skeletal Angel"), despite not having a visible skeletal structure.
This card's Japanese name is a portmanteau of 透ける (sukeru "to be invisible") and エンジェル (enjeru "angel"). Its Chinese name (隱形天使 Yǐnxíng Tiānshǐ) literally means "invisible angel".
This card has the shortest effect text of any monster in the TCG.