Not much to say about Gotenks. Gotenk is Trunks and Goten fused together. Gouku taught Goten and Trunks how to do the fuse dance. Gotenks can turn into SSJ1 or SSJ3. The reason that Goten and Trunks fused is so they could defeate the evil Boo(Buu). But it still wasn't enough. Goten and Trunk tend t fuse a couple times. One im they messed up and made a fat Gotenks. So Gogeta also messed up to. Gotenks is the name but it is also known as Gotrunks. So don't get confused. Gotenks has to wear Boo close because that is the only thing that fits them. The same thing goes with Gogeta. You can see Gotenks in the Boo saga.
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