(SSJ3) Goku won.
It was a close battle, and nearly a "tie," so Vegeta thought of a plan in which everyone on Earth would lend as much energy as they could, for a Spirit Bomb. The plan worked; though Goku had to be re-energized by the Dragon Balls (from his fight).
goku you should know he used a super spirit bomb
yes with the super spirit bomb
Kid Buu is extremely powerful (and strong); he is almost or equal to the power of Full Power SSJ3 Goku.
Kid buu was created when vegeta and goku were in buu and remove all the absorbed characters including the overweight buu
Goku killed buu (buu in his final form as "kid buu") with the spirit bomb
Buu never killed Gohan. On the other hand, I believe Goku killed kid Buu.
Super Buu > Kid Buu -Kaioshin just said Kid Buu is just most DANGEROUS OF ALL BUU that not mean him is the strongest -Goku When Inside Buu him say him can't beat super buu if him go out him would be killed -Super Buu is more smart than Kid Buu -Piccolo even think SSJ Gotenks stronger than SSJ3 Goku who par with Kid Buu Ultimate Gohan > SSJ3 Gotenks >= Super Buu >>>>SSJ3 Goku = Kid Buu
yes with the super spirit bomb
No Goku won in the end against Kid Buu by useing the Spirit Bomb
Kid Buu is extremely powerful (and strong); he is almost or equal to the power of Full Power SSJ3 Goku.
Kid buu was created when vegeta and goku were in buu and remove all the absorbed characters including the overweight buu
Janemba would win because Kid buu and Super Sayain 3 Goku have the same power level although Janemba beat Super Sayain 3 Goku and goku told Vegeta that the only way to beat Janemba was to fuse so Janemba is stronger.
He turns into Kid Buu.
kid buu by a long shot ss3 goku<kid buu while ss2(anyone)>cell
goku ssj4 is way stronger than kid buu because buu wouldn't defeat even a great ape which ssj4 would
Goku killed buu (buu in his final form as "kid buu") with the spirit bomb
SSJ4 Goku, of course!
Goku and Vegeta take Majin Buu (the fat one) out of super buu