This is the 6182nd most frequent Japanese word.
ガイル
"ガイル" typically refers to "Guile," a character from the Street Fighter video game series.
Here, 'ガイル (Guile)' is used as a proper noun referring to a specific character in a video game.
ガイルはストリートファイターのキャラクターです。
Guile is a character from Street Fighter.
In this case, 'ガイル' is used to refer to someone's name.
彼の名前はガイルだと聞きました。
I heard that his name is Guile.
Here, 'ガイル' is referred to discuss the uniqueness of the name itself.