<P> In `` Escape from the Citadel '' , Finn had lost right arm after it was pulled off after an attempt to reach his father , which was then coated by the blood of a Citadel Guardian that made it grow into a small flower . He later got his arm back in the episode , `` Breezy , '' where the flower stub matured into a tree and broke away like a cocoon , revealing a new limb . In the seventh season finale , `` Reboot '' , Finn lost it once more when his grass arm tries to attack a savage Susan and transforms into a sentient grass being called Fern the Human . Starting with the eighth season premiere , `` Two Swords '' , Finn has been fitted with a new robotic arm by Princess Bubblegum , who fastened it in his amputated part since his old arm was no longer part of his body . </P>
<P> In `` Escape from the Citadel '' , Finn had lost right arm after it was pulled off after an attempt to reach his father , which was then coated by the blood of a Citadel Guardian that made it grow into a small flower . He later got his arm back in the episode , `` Breezy , '' where the flower stub matured into a tree and broke away like a cocoon , revealing a new limb . In the seventh season finale , `` Reboot '' , Finn lost it once more when his grass arm tries to attack a savage Susan and transforms into a sentient grass being called Fern the Human . Starting with the eighth season premiere , `` Two Swords '' , Finn has been fitted with a new robotic arm by Princess Bubblegum , who fastened it in his amputated part since his old arm was no longer part of his body . </P>
adventure time how does finn lose his arm
adventure time how does finn lose his arm
pulled off
pulled off