Mark of the Guard

The Mark of the Lion Guard is a special mark given to members of the Lion Guard. It is in the shape of a roaring lion's head. Each member's mark changes color to match their own pelt. It is given to them by the leader placing their paw over their shoulder.

It seems to be well-known as a representation that the animal that it is bestowed upon is a member of the Guard, as shown in the episode Never Judge a Hyena by Its Spots when Jasiri tells Kion that the mark on his shoulder was a giveaway that he was a member of the Lion Guard.

The Lion Guard: Return of the Roar
Kion and Bunga are seen playing Baobab Ball when their baobab rolls into the Outlands. Bunga leaps in to retrieve it, but is caught by Cheezi and Chungu. Kion uses the Roar of the Elders to make the hyenas let Bunga go, and the Mark of the Lion Guard appears briefly on his shoulder before fading away. It later reappears during Kion's Lament after Kion accepts his destiny.

When Janja's Clan attacks the Pride Lands, Kion bestows the mark upon the new Lion Guard- Fuli, Beshte, Bunga, and Ono- by placing his paw onto their shoulders.

The Lion Guard
The Mark of the Lion Guard is visible on the left shoulders of each member of the Guard during every episode of the show.

Follow That Hippo!
Kion dips his paw in mud and uses it to give Mtoto a muddy Mark of the Lion Guard. Kwato, Gumba, Kambuni, and Shauku approach him requesting that he give them a mark as well.

Trivia

 * An early version of the mark was a lion paw print.