Yoshimo

Yoshimo is a true neutral human bounty hunter, a class kit for thieves and he is a potential companion. He will join the party in Baldur's Gate II: Shadows of Amn when they reach the second level of Irenicus' Dungeon in order to escape the dungeons. He has the following items when joining the party: a katana +1 which can only be used by him, a short bow, studded leather armor and some arrows. He is not available in Baldur's Gate II: Throne of Bhaal due to plot reasons.

In-game description
"When asked about his past, Yoshimo seems disheartened that you are not acquainted with his reputation. By his own account, he is apparently well known among the people in the know,  both as a daring rogue and a dashing man about town. While the story sounds impressive, he seems ungainly for such exploits, possibly a bit more hapless than debonair. He wears it well, however, and perhaps even capitalizes on it. He seems to know that his kind of good-natured humor is well appreciated by most everyone he meets."

Quotes

 * "Fear is for those without confidence."
 * "Where shall I display my skill and expertise?"
 * "If memory serves..."
 * "Soh des neh?"
 * "I am ready, I think."
 * "What do you need? I am skilled in avoidance."
 * "You require my counsel, yes?"
 * "Ah yes... the city. With all it's people and accumulated wealth, yes?"
 * "Yoshimo is willing."
 * "You require my counsel, yes?"
 * "You're right behind me, right?"
 * "Very well. Hii - yah."
 * "Yokatta."
 * "Nothing dangerous, I would hope."
 * "I can dance on the head of a pin as well."
 * "Fleet on foot and all that."