Miklan

Miklan is a character from Fire Emblem: Three Houses. He is the eldest son of the Earldom of Gautier, and Sylvain's older brother. However, as lacks a Crest, he was disowned as heir in favor of Sylvain.

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Miklan steals the Hero's Relic of the Gautier family and Byleth and their students are sent to fight him. Due to Miklan lacking a Crest of Gautier he is unable to properly use the Relic and becomes a Demonic Beast as a result.