In TFBoys;

王俊凯 is; Leader, Main Vocalist and Visual/Face of the group (rapper)

王源 is; Main Vocalist and cutest member

易烊千玺 is; Main Dancer and mandarin speaker

On google, there's written, that they all are vocalists, which isn't false. But the truth is that, their main positions in the group is; Dancer, （Rapper） and Vocalist.