The subject of this article or section originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.
During the War of the Ring, Thónnas accompanied Haldir and a large group of Galadhrim Warriors to aid King Theoden and his people to reinforce the defence of Helm's Deep from Saruman's army. Stationed on the Deeping Wall, Thónnas was slain during the Battle of Helm's Deep.
- The Two Towers (film) (First appearance)