'Fear'
It wasn't an emotion that Olympians admitted feeling. However, just like everyone else, they felt fear too.
As Liam tore through his strongest generals that were as strong as him in terms of fighting capabilities like they were nothing and marched towards the central palace walls, Perseus felt fear gripping his entire body as he contemplated the choice between running away and confronting Liam.
'There's no way I can fight that monstrosity' he thought, as he was on the verge of running away when Liam's spectral storm started to slow down and dissipate, as Liam himself dropped down to both his knees looking like a thin and brittle skeleton.
"He's down….. he's finally down …. The toll of using that power is finally forcing him to die" Perseus told himself in elation as he gripped his sword and charged out like a fearless lion, smelling the weakness in his prey.