Forest Army

The Tree Army are an army of living trees who appear in the movie Maleficent

Background
The Tree Soldiers protect the Moors and serve under Maleficent's command. When the forest kingdom was under threat of a army from the human kingdom, Maleficent became the land's protector and summoned her army of tree creatures to fight King Henry's army.

The soldiers ride tree creatures that look like warthogs.