Oh man Percy reminds Kal so much of himself saving the distances. He’s a brave little guy with powers that wants to save everyone no matter what the cost is to himself and with a tendency to surround himself with strong women... so yes, there are similarities there.

He appreciates Percy’s determination to save the sea life and how skilled he is with his power set (man Kal was a disaster when he was Percy’s age you should have seen him-) and knows he will grow up to do big things, if he’s given the chance.

But he’s also aware that, just like him, Percy sometimes jumps into things without thinking them twice because if there’s a chance to save someone, he’ll take it. And he’s glad he has Annabeth on his side to stop him, just like he has Lois.