it was the child.
Zeus grew up, knowing what he had to do when he got old enough. He talked to a wise goddess named Metis on how to defeat his father. She gave him a drink, that if Cronus drank it, it would make him vomit up the other 5 children. His mother got the approval of his father to let him return. He then took the opportunity to slip him the drink. Well, it worked as planned. The 5 other children, and being the gods they are, they were all grown up and unharmed. They made Zeus their leader for freeing them from their father's prison.
Well, now they weren't done with Cronus, he was yet to be defeated. Zeus and the other gods went to war against all of the Titans except three, which were Prometheus, Epimetheus (creators of mortals), and Oceanus. One god that didn't fight with Zeus was Atlas.
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