Gogeta SS1 is uber powerful, he has an attack that can attack a persons soul and near enough kill them.
SS4 Gogeta can be punched and kicked the crap out of and he won't feel it, he can blow up the Earth, Teleport any where he wishs in a second and he is basically unaffected by almost every attack used against him, he also has a good sense of humour, and as for his power, he was so fast and strong in the time he existed it was unbelievable, and he only existed for ten minutes, so his true capabilities are still unknown.
Credit to .Impact for the sig & avy