The fictional character of Captain Hook was not written with any sexual orientation in mind. The character is never depicted in romantic situations.
Graeme Smith is straight.
Captain Hook is a/an Pirate
Captain James Hook
His openly gay and a member of the Wednesday club, recruited by Captain Wednesday himself.
Captain Hook was created in 1904.
The character of Flapjack is not written with sexual orientation
Nothing is known of her sexual orientation.
Soko's sexual orientation is heterosexual/straight.
The Joker's sexual orientation is not written into his character.
Captain Hook had no friends, only some shipmates.
The fictional character of Yoshi is not depicted with sexual orientation.
The SNL character "Gilly" was not written with sexual orientation.