Dawn had originally been somewhat worried about Doflamingo's retaliation, but now that old man Garp had come aboard...
Dawn's worries vanished in an instant. He even observed three seconds of silence for Doflamingo.
If it had only been Aokiji, along with Vice Admiral Tsuru, who had been pursuing him all along, teaching him a lesson would have been effortless.
With Aokiji involved, even the entire Donquixote Family and several of their top officers would not be able to stir up much trouble.
But if Vice Admiral Tsuru were replaced by Garp, then sorry, unless Doflamingo brought Kaido out of hiding, he really could not pull off any tricks.
People online had once speculated that if Garp was still ridiculously powerful in his seventies or eighties—sending Marco flying with one punch and declaring he would kill Sakazuki after Ace's death—then just how formidable had he been in middle age?
The answer was: absurdly formidable. Only after Dawn came to this world and met the middle-aged Garp did he understand how terrifying Garp's strength was. Otherwise, he would not have been worthy of the title Marine Hero.
If it had only been Aokiji before, Dawn might have honestly watched from the sidelines and merely displayed some of his strength at sea.
But now that Garp was here, Dawn began thinking about how to court death... Ahem, how to make Doflamingo so furious that smoke came out of all seven of his orifices. They were mortal enemies anyway, so when it was time to strike, he would strike.
Once Vergo's undercover identity was exposed, then sorry, no matter how angry Doflamingo was, the Marines would chase him until he fled like a dog.
After all, he still wanted to scheme for a position among the Shichibukai. Once Vergo's matter was exposed, lying low