He told empire magazine“There would be a lot more of Crossbones. I was the one character that I think should be more, and these other idiotic characters are still out there. I was an asshole, kind of petulant.”
However, his son convinced him to do the cameo.
Grillo continued, “He said, ‘This is going to be the biggest movie in the world,’ and he was right. And I had a great time. They were doing the 10th anniversary, Stan Lee was there, and I stood and went, ‘What an asshole am I!'”