Complex sentence: Before the Incident of him being ordered to subdue Gyumaoh he met Son Goku also having a taboo blood the two grew accostomed to each other beacuse both having the same nature.
Split into simpler sentences: Before the Incident of him being ordered to subdue Gyumaoh he met Son Goku, who also had taboo blood. The two grew accustomed to each other beacuse of both having the same nature.