Only Gohan was recognized as a SS2 however you can see other Saiyans have reached it as well. A SS2 is characterized same as a SS with more spiky hair and blue lightening surrounding them. Goku, vegeta, Broly and Gotanks also achieved this but more quietly.
goku became ssj2 when he faught vegeta in the babidi saga
Goku can go Super Sayian Stage 1, Then Ascended Super Sayian or Above Super Sayian Stage 2 but below Super Sayian 2 Stage 3, Stage 4 is Super Sayian 3, Stage 5 is Super Sayian 4!
Yes Goku is stronger than Pikkon as you remember they were only true equals during the end of the cell games saga . Were Pikkon was only able to go toe to toe with Goku in his super sayian form . Both were equal but overall goku seemed to be the greater fighter even after their fight . Now at the end of the Kid Buu saga goku managed to reveal that he surpassed gohan at super sayian 2 when he revealed his super sayian 2 tranformation , and should have definitly proved it when he turned into super sayian 3 . So if Goku could beat Pikkon in his normal Super sayian transformation what gives you a chance he can beat him in super sayian 3 . I would just overkilled the answer and said that Goku SS4 in GT . But sadly its not official it is all OVA . But Goku by the end of the kid buu saga he reaches super sayian 3 which clearly is multiple times stronger than his super sayian transformation .
Well it isn't exactly called the Time Chamber it is called the Room of Spirit and Time. and anyway Goku trained his son Gohan to become a Super Sayian and after this he fought Gohan as a sparring partner and then Goku surpassed the boundaries of Super Sayian 1 and 2 and went on to 3 and a muscle form which goku said "killed his speed".
no goku cannot become ssj4 in buus fury because he only becomes ssj1 2 and ssj3 in the game
I don't think he does because in one episode he could I remember him going super sayian and super sayian 2 but that's it.
Vegeta becomes super sayian 2 when he doesn't kill Majin buu. When he came back to help goku defeat super buu.
Yes, They did go ascend super sayian but they didn't go ultra super sayian because ultra super sayian slow them down and they don't want any thing slow them down against Broly, The ultra super sayian surpass legendary super sayian the ultra super sayian is stronger but they are slow if they goes ultra super sayian they will make a challenge, if Gohan goes super sayian 2 he will kill Broly and make sure he don't survive.
goku turnes super saiyan in dbzkai is episode 47 and ends freeza in episode 48
In the Majin Buu Saga after Buu was resurrected. When Vegeta was in the heavens after he died, he saw Goku go SS3 and accused Goku of mocking him with that transformation. In case you were looking for the episode number it was episode 245
Gohan is stronger if goku is in his normal form but if they are both in super saiyan 2 form or if Goku is in super saiyan form then goku is stronger.
If it just doesnt work blame your wii if there are other problems blame your wii and optical disc. and if everything works except goku blame it is probuble ur disc buy a new one be nice to the earth!!!!
Vegeta was super saiyan 2 against kid Buu.