<P> In the Season 6 opener `` Escape From the Citadel '' , Finn has lost half of his right arm , up to his elbow , from which a flower protruded . He later regains his arm , now as a prosthetic , in the episode `` Breezy '' , only to lose it once more in the seventh series finale `` Reboot '' when his grass arm transforms itself into a humanoid , sentient being . In the Season 8 premiere episode `` Two Swords '' , Finn gets fitted with a new robotic arm by Princess Bubblegum , to replace the missing arm . </P>
<P> In the Season 6 opener `` Escape From the Citadel '' , Finn has lost half of his right arm , up to his elbow , from which a flower protruded . He later regains his arm , now as a prosthetic , in the episode `` Breezy '' , only to lose it once more in the seventh series finale `` Reboot '' when his grass arm transforms itself into a humanoid , sentient being . In the Season 8 premiere episode `` Two Swords '' , Finn gets fitted with a new robotic arm by Princess Bubblegum , to replace the missing arm . </P>
what episode of adventure time does finn lose his arm
what episode of adventure time does finn lose his arm
Season 6 opener `` Escape From the Citadel '' seventh series finale `` Reboot ''
Season 6 opener `` Escape From the Citadel '' seventh series finale `` Reboot ''