. . . "title character" . . . . . . . . "Invincible (character)" . . . . . . . . . "Invincible (character)" . . . . . . . . . . . . . . "Mark Grayson / Invincible" . . . . "son" . . . "Invincible" . . . "Mark" . "Mark Grayson" . . . . . . . . "titular character" . . .