When the three escape, the boy insists on being up front with Leo and the others as part of their plan to surprise the Apes. When the boy doesn't stay behind as told, he gets caught in the stirrup of his horse and has to be saved by Leo who cuts him free and then runs on foot, while the brave foolish boy rides to safety on his horse. He is seen fighting alongside Limbo.
- When Leo and Daena first escape, Daena says she will not leave her family behind in the city. They seem to intentionally search for Birn to free him, implying that he is related to Daena in some way. They demonstrate a close bond during the rest of the film, perhaps indicating that they are sister and younger brother.
- 'Birn' is a Scandinavian name.
- The Planet of the Apes Chronicles, by Paul A. Woods
|Planet of the Apes - The Chronicle of Ashlar|
|Planet of the Apes TB|
|Planet of the Apes (2001)|
|Leo Davidson | Ari | Thade | Attar | Krull | Limbo | Daena|
|Grace Alexander | Aspasia | Bon | Leeta | | Thade's Niece | Tuug | Karl Vasich | Woman in Cart | Zaius | Sandar | Nado | Nova | Pericles | Semos | Birn | Gunnar | Karubi | Tival|
|Ashlar | Calima | Oberon | Derkein|
|Comics, Novels & Magazines|
|The Human War | Planet Of The Apes (2001) Graphic Novel | Planet of the Apes (2001) (Junior Novelisation) | Planet of the Apes (2001) Concept Art & Costume Tests|
|Planet of the Apes (2001 Soundtrack Album)|