NEVER.
yes goku can beat them.
No, Trunks in any of his forms cannot beat SSJ3 Goku.
No,Superman can not beat Goku,Goku has power moves like supersain or as the kahmekahmeha,but as for superman his power can not match gokus
if goku was able to beat broly before he can probably do it again
Yes Goku would kill him in a milisecond
No. Goku can't beat up naruto because if goku can even destroy a planet, kyuubi tailed naruto can regenerate and put a nine rasengan up goku's a**
Goku because Goku beat Xicor even tho Xicor was part god and reached ss5.Goku also reached ss5 and beat Xicor with a fierce kamehamaha.
He beat him before until Goku got all the power of four people (Three Saiyans and a Namek). After the movie, No is the answer, because Goku is now stronger and trained in the sprit world. In fact, Even Goku from CG Saga can beat Broly.
none because goku pwns
Goku because He can beat the heck out of bloom.
Goku would win, The characters of Dragonball have the power to destroy entire planets, pain destroyed only a city. and if goku goes ssj or ssj2 he would destroy pain, even in his normal form
Of course Goku would easily win.