All the DBZ (and movies in the dbz timeschedule) Saiyan Forms
Normal Saiyan, there is actually a glitch in the series, because ALL pure saiyans have black hair, but vegeta appears with red hair in the beginning of the series. also all pure saiyans are born with a tail wich can transform them to oozaru when they watch the moon, achieved by- all saiyans
SSJ Just like a saiyan, but then with yellow/gold hair and the strengt and speed increase enormously, SSJ can only be achieved after heavy training and when certain emotions occur achieved by- all saiyans except the one who died in or be4 the saiyans saga
assj, a supersaiyan but then bulked up, much more powerfull in strength then a SSJ , but his/her speed drasticly decreases. Also your hair gets a lot more spikey then SSJ. This form can only be achieved after heavy training. The saiyans who achieved this stage are (or who are actually seen with it in the series) Vegeta , Goku , Trunks , Brolli
ussj this is when trunks fights cell, you hear krillin say, "wow, he's acsending" you loose your pupils and your hair gets even more spikey then b4, also your speed decreases even more and strength goes up even more. Trunks did not want to use this form because he didn't want vegeta to feel that he surpassed him. But eventually he has to use it anyways. This form can only be achieved after heavy training and is only obtained by brolli and trunks
LSSJ This is the form brolli is in in the movies, it's exactly like a USSJ but the difference is that he has mastered it and no he has no decrease in speed , this can only be achieved by heavy training
SSJ2 This is when Gohan fights cell, your hair grows even longer and all hairs except one stand up. Your power increase by a lot and your speed does too. This form can only be achieved after heavy training and when certain emotions occur. saiyans who achieved this form - Gohan Goku Vegeta
SSJ3 This is the form Goku is in after his training in heaven. Your hair grows enormously, and your power increases a lot and your speed does too. Also, the eyebrows disappear. The only downfall is that it consumes a lot of energy. Achieved by - Goku Gotenks
I couldn't find any Oozaru pics but that is explained above anyways
That was a lot to write
grtz Naz