Symbols and Marks are use to decorated wardrobe worn by ninja or animals. They are a symbol of identity, defining who and what they are.
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I Symbol

Doctor Symbol Owner: Medical Team
Location: Left chest and back jacket
All Leaf Village medical member wear the "I" kanji meaning "Doctor" on their left chest and back jacket.

Kage

Kage Symbol Owner: Kage
Location: Front of hat
The "Hi" Kanji standing for fire is seen worn by the Third Hokage. All 5 kages that wear this outfit will have the prefix of their country on the front of their hat.

Kake Symbol

Kake Symbol Owner: Tsunade
Location: Back jacket
Tsunde is wear the "Kake" symbol meaning "gamble" on the back of her green jacket. The Kake Kanji shows her personality, he addicts to gambling, which he is horrible at.

Orochimaru Summoning Tattoo

Orochimaru Tattoo Owner: Orochimaru
Location: Left Arm
Orochimaru wears a snake like tattoo that runs from the elbow to the wrist. Whenever he needs to summon Manda or other snakes, he would wipe the blood straight down the tattoo, starting at the tail (elbow) and down to the head (wrist).

Police Symbol

Police Symbol Owner: Konoha Police
Location: Top of Headquarter
The Police Headquarter's bears the Uchiha Fan, as the found of the organization. It is surrounded by four-edge star.

Tsunade Forehead Mark

Tsunade Forehead Owner: Tsunade
Location: Forehead
One of the Legendary Sannin, Tsunde bears this mark on her forehead. It is a place to draw or collect chaka. This allow her for fast and easy healing. She draws chakra from this symbol in order to use the Souzou Saisei, Creation Rebirth.

Uchiha Symbol

Uchiha Symbol Owner: Uchiha Clan
Location: Back jacket
All members of the Uchiha Clan bear this symbol on their back jacket. Taken from the Japanese word Uchiha (Uchiwa) meaning fan.
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