They didn't know he was on Roger's ship.
YahThat frog.He was that giant one back when the Straw Hats ran into right?
YupThat frog.He was that giant one back when the Straw Hats ran into right?
That happened already in the show. It's not a spoiler.That frog.He was that giant one back when the Straw Hats ran into right?
That frog.He was that giant one back when the Straw Hats ran into right?
Doesn't the government find out about it because of the Impel Down and War of the Best arcs, which led to its inviting him, anyway? They thought he was really strong and influential, but keeping a low profile all those years, so they made him a member.
I immediately hate angsty Franky and wish bad things to happen to him.