More or less the same expression as akainu's showcased by meme, even worse lol.
No different with kaido, he even got PTSD by a dead man lmao.
And we all know what happen next, kaido manhandled all scabbards.
So, using facial expression is not wise to bait and troll, because it doesn't mean the one with such facial expression would automatically lose the battle.
And btw, akainu isn't scared at all, he's just surprised by the sudden arrival of another top tier.