However, he and Sam have secretly planned to journey beyond, to Bree where he will meet again with Gandalf, so that they can travel to Rivendell; Frodo has the Ring of the Dark Lord Sauron in his possession, and he believes it will be safe there.
He does not age, but has a sense of becoming "thin and stretched." Toward the end of his possession of the Ring, Bilbo begins to show some of the obsessive tendencies of Gollum — calling the Ring "my precious," and showing flashes of dark hostility when asked by Gandalf to give the Ring to his heir, Frodo.
Jonathan Elias Weiske voiced over the character "Frodo" for the The Lord of the Rings: Aragorn's Quest video game (in German Die Abenteuer von Aragorn)
Shippey says that Tolkien knew well the translation of Boethius that was made by King Alfred and he quotes some “Boethian” remarks from Frodo, Treebeard and Elrond.
In the Inn at Bree ("At the Sign of the Prancing Pony", The Fellowship of the Ring Chapter 9) Frodo jumps on a table and recites "a ridiculous song" invented by Bilbo.