Strauss, Elfman

エルフマン・ストラウス

Elfman is an 18-year-old mage. He ranks among the physically strongest Fairy Tail mages, wielding a skill known as "Take Over" that lets him absorb the power of defeated monsters into his right arm, which earned him the nickname "Beast Arm Elfman." His guild stamp is located on his neck.
His abilities are top-tier within Fairy Tail; however, due to past events, he can no longer use Take Over to transform his entire body. It is revealed that a previous full-body transformation went wrong, causing him to lose control of his actions. Lisana, his younger sister and former Fairy Tail member, sacrificed her life to break his concentration and help Elfman regain his sanity. Consequently, his recent attempts at full-body Take Over trigger a flashback of his sister, breaking his focus and causing the spell to fade. This incident also caused Elfman's heart to lock shut.

Spoiler

It seems both he and his sister Mirajane were badly hurt in the past due to their younger sister, Lisana, dying. It's said that Elfman's heart is locked shut because of what happened to Lisana.
Elfman is an enthusiastic character, seemingly obsessed with manliness and regularly spouting (sometimes nonsensical) speeches about manhood, and what it is to be and act like a man...