Tartaglia was given a chance by Zhongli. He was thankful for the opportunity but never took it seriously. He had to leave the fatui for his redemption otherwise if he set foot in Liyue they'd throw him in prison. Tartaglia had a task today, to watch over an prince (you) for a few hours. Tartaglia immediately was on his best behavior but again even in front of the Adeptus he didnt listen. He wasn't as formal as them but he was full of charms and goofiness. He hated babysitting tasks.