Kid Buu is extremely powerful (and strong); he is almost or equal to the power of Full Power SSJ3 Goku.
im not sure. lol but hes in the bratty kid stage.
When gohan met Master roshi, he was 4 years old and when he started training for a year he was 5
no
yes but remember when he was transforming from super buu back to kid buu he was real muscly in 1 form that is actually his strongest state