The major character is called Treebeard, the race of tree-people are called Ents.
Anything from Orcs to Hobbits. Any creature or creation in Middle Earth, is Tolkien's.
Ents
There are the ents, the creatures that look like trees and have great wisdom and knowledge. They herd treelike creatures called Huorns. But the most important tree is the White Tree of Gondor, the White Tree of Númenor that was they symbol of the King of Gondor.
Tolkien creatures are often referred to as "Middle-earth creatures" or "fantasy creatures" as they inhabit the world created by J.R.R. Tolkien in his works, such as "The Lord of the Rings" and "The Hobbit." Some notable Tolkien creatures include hobbits, elves, dwarves, orcs, ents, and dragons.
The playwright J.J. McGilicudy.
An Enting is a young Ent, they are sentient tree-people.
J.R.R Tolkien had a brother called Hilary Arther Reuel Tolkien born in 1894.
That would the the ENT, the tree like creatures.
The Last March of the Ents
a recent time
There is no character or creature specifically referred to as a "monstrous Tolkien" in J.R.R. Tolkien's works. However, Tolkien did create many monstrous beings such as Orcs, Trolls, Balrogs, and Shelob in his writings. These creatures are often portrayed as dark and malevolent entities in his legendarium.
Nope.