Jonas Harken/Abilities and Powers

Misu-Tenryu Style
It's unknown what the strengths and weaknesses of this style are. It's been said that his brother was a better user of this style than him, though.

Weapons
Jonas' main weapon is a Kairoseki sword. He's shown to be very skilled using this weapon, taking out several pirates at once with it, using the Misu-Tenryu Style.