First Attack Edit
He first appears in Episode 6, having been sent by Dyspear after Close and Shut's failures to defeat the Cures. He targets a baseball player and creates a Zetsuborg. During the battle, he encounters Cure Flora and tries to dishearten her, but she was not affected.
He has the appearance of a young boy with dark orange hair that covers his eyes. He also wears a black hood with demonic eyes that can move, acting as his eyes, teeth, horns and wings with a padlock at the center. He also has a dark yellow and red coat with orange shorts and sneakers. His sleeves and legging are gray and black-striped. He is always seen playing a handheld video game.
Like the rest of the Three Musketeers, he can trap people into the Gate of Desperation to create a Zetsuborg by saying "Lock your Dream!".
- Lock is the third villain to be a kid preceeded by Kiriya from Futari wa Pretty Cure and Ira from Doki Doki! Pretty Cure.
- He is the youngest villain who is a kid, as he is the first to not be a teen.