I had a bit of trouble finding things to say about Jason as he doesn't have many inside jokes or gimmicks. So sorry if this is lacking in the creativity department.
He is Jupiter's son,
After he killed the titan Krios he still wasn't done,
He is friend with Leo and the crew,
They almost ended up as cyclops stew,
His sister is Thalia Grace,
Leader of the hunters and totally ace,
He's been known as the blonde superman,
Or even as the blonde Peter Pan,
Tempest is the horse he rides,
Jason can fly and does really sick glides,
Piper is his girlfriend,
She often has a hand to lend,
He has control over lightning,
This former praetor is very frightening,
His eyes deep and blue,
Sparky is the one for you!,
Is it a bird? Is it a plane?,
No, it's Jason Grace off to save the world again!