|“||...Can you do it? Can you get aboard and steal The Andomal?||”|
He is a skilled former thief, not able to resist a pick-pocketing challenge; once he removed a blacksmith's bracelet while talking to the blacksmith, as seen by Hal. He, of course, held it up triumphantly the moment it was off, to return it, but it is noted here another of his natural skills is the ability to go from zero to sprinting, as the blacksmith didn't exactly see what was funny.
When the Herons were sent to jail, Jesper, who thankfully couldn't part with his lock picking kit, was able to pick the lock and escape. Also, Jesper is shown to be good at making sagas with Stefan at Skandian standards.
Slaves of Soccoro
When Hal, Stig, And Thorn break Ingvar out of a slave market, Jesper picks the lock on the gate.
Jesper is not muscular as Stig or Thorn, he can't fight very well as Hal or Stig, but he knows how to defend him self.
Jesper is always one to raise an argument, and it often gets him into trouble, particularly with Thorn related incidents.
Jesper is capable of moving very silently and almost unseen, a skill that helps the Herons a lot.
Further Jesper can run very fast. An advantage, Jesper was a thief, so he can invade places and save people.