In the cinematic retelling Escaflowne: The Movie, the character known as Folken is a figure of immense power and tragic malevolence. He is the film's primary antagonist, whose birth name is Dune, the elder prince of the Dragon Clan of Fanelia. His entire being is shaped by a single, devastating prophecy. When an oracle foretold that his younger brother, Van, was destined to inherit the throne of their kingdom, Folken reacted with an act of catastrophic violence, slaughtering his own family, including his parents, and burning their castle to the ground before vanishing.

By the time events of the movie unfold, Folken has fully embraced his role as the leader of the Black Dragon Clan, a formidable force that serves as his instrument of conquest. His personality is defined by a cold, cruel, and vengeful drive, a stark contrast to the more complicated and conflicted counterpart seen in the original television series. He is a nihilist and a Death Seeker, a man whose ultimate wish is the utter destruction of the world of Gaea, a goal he pursues with chilling determination. His motivation is rooted in profound sorrow and a distorted sense of destiny; having been denied the throne, he decides that if he cannot rule, then nothing should remain at all. He regards his brother Van not with familial affection, but as the focal point of his resentment, believing Van to be the cause of his wretched fate.

Folken is the catalyst for the film's central conflict. He is the one who successfully summons the titular character Hitomi from Earth to Gaea, believing her to be the Wing Goddess whose arrival is prophesied to herald the end of all things. His relationship with Van is the emotional core of his role in the story, defined by a dysfunctional inversion of brotherhood. Where one might expect loyalty, Folken offers only a bitter obsession, placing his sorrow squarely upon his younger brother and seeking to destroy everything Van wishes to protect. His most significant relationship outside of his brother is with his own henchman, Jajuka. Unlike Folken, Jajuka is a character who is disgusted by the brutal violence of the Black Dragon Clan, and this internal conflict ultimately proves to be Folken's undoing.

Regarding character development, Folken’s journey is one of tragic stasis. He does not find redemption or turn from his path. He remains a villain to the very end, a being who willingly delves into the darkest aspects of his nature. Even in his final moments, as he faces death, the film offers a fleeting glimpse of a different past, a vision of a young Van calling out to him as a brother, but this does not lead to a change of heart, only a powerful sense of pathos regarding what was lost. He meets his end at the hands of his own subordinate, Jajuka, who successfully assassinates him, an ironic fate that mirrors the betrayal and violence that Folken himself had sown.

Folken possesses notable abilities befitting his royal lineage and his status as a formidable antagonist. As a descendant of the Dragon Clan, he can manifest large, black angelic wings, a physical mark of his heritage and a harbinger of his own impending doom. He is also depicted as a highly powerful psychic, demonstrating potent telekinetic abilities that he wields in combat, often likened to the mental powers seen in other science fantasy epics. In this version of the story, it is Folken, not a separate empire, who possesses and seeks to wield the legendary armored giant Escaflowne, which is prophesied to lay waste to Gaea. He is not a mere servant but the mastermind, a Big Bad whose power and ambition threaten all of existence.