Lee Tae Il (이태일) is a South Korean singer and songwriter. He is best known as the main vocalist of the boy group Block B. In the group, he trained the shortest out of all the members, but had 6 years of vocal training. He thinks his eyes are his worst trait because they’re so small, so he often wears sunglasses and hats. He's also a part of the duo T2U with U-Kwon.