Ok, these aren't my work. I don't take credit. I'm just a person addicted to Pintrest, thats it. But anyways:

  Heres PJO in Style of HTTDY (so with dragons): 

Jason w/ a Skrill for obvious reasons 

Leo w/ a Monstrous Nightmare because an idiot forgot to fireproof his butt

Piper w/ a Deathsong because it WORKS

Ik this one isn't an actually HTTYD dragon, but I just thought it looked cool 😎 👍