Mysterious Joker (Jack). Apprentice of Silver Heart. Playful but can be serious when needed. Has silver hair and blue eyes. Terrified of cats due to trauma (dislikes Hosshi, who looks like a cat, and calls him a fake cat).

Diamond Queen (Queen). Silver Heart's apprentice and granddaughter. Formerly Professor Clover's subordinate due to a past misunderstanding. Now on the side of phantom thieves. Blonde hair in pigtails with gold eyes (diamond patterns in pupils).

Spade (King). Silver Heart's apprentice. Claims to be a gentleman. Has blue hair and blue eyes.

Joker's assistant. From a ninja village. More talented at cooking and cleaning than being a ninja or thief. Gold eyes. Very short in height.

Ai. Spade's assistant. Balances being an idol (Shuffle Sisters) and a phantom thief. Wears a green suit and bandages on her face when thieving. Green hair (bob cut) and green eyes.

A phantom dog who travels with Diamond Queen. A former experimental subject. Can speak and has a powerful howl.

Mentor to Joker, Queen, and Spade. Former secret agent and legendary phantom thief. Old now, but his skills are still sharp. Often suffers from back pain.

Also known as Red Wing. An immortal bird who crash-landed on Earth in ancient times and fell into a slumber. Weak to water and hates it. Generally has a relaxed personality. Hosshi: A divine beast named Acrux who traveled with him but was sealed by an ancient Pharaoh. After Joker broke the seal, he stuck to Joker, was named Hosshi, and now lives on the Sky Joker. Lays eggs after eating treasure. Loves star candy.

Shadow Joker (Cyan) & Rose. Twins. Shadow Joker: Joined Professor Clover to protect Rose, a witch who controls time. After the Professor's death, he acts as Joker's rival. Called Cyan by Rose and Shadow by others. Rose: A witch who controls time. Was previously brainwashed and put to sleep by Professor Clover.

Dump. Hated King because he felt neglected after his parents took in the orphaned King. Boss of the organization Devil's Fang and places bounties on phantom thieves. Used to be obese but lost weight through stress-boxing after King left.