First encounter of Orion

Orion (stats Orion ) (CR 12) is appalled that the party killed gold and wishes to kill them for there transgressions he walks through the streets disguise as a noble paladin and askes for help (if they choose to insight its DC 16 and his disguise is DC 18 investigation) his lie is that "please I need help a large group of necromancers are coming we need to stop them" Tingle will wish to follow as to protect the necromancers from this paladin and any one else who decides to help. he will lead them down into the cave until out of view then reveal himself as Orion attempting to kill Tingle which is when Helga will defend him attempting to fight Orion which will then lead to him using "Release vessel" she will most likely die if not on the first try then the second, example "The Paladin leads you down the caves for about 5 minutes before stopping... "so foolish Tingle you really should be more careful" a bright light fills the room as enormous wings of Golden sun shine forth from the paladins shoulders and his figure fades to reveal a larger body covered in golden armor bearing the symbol of the unaligned along with a giant sword and shield in a beautiful silver turning to face the party Helga transforms grabbing the face of what was the paladin that seems like a blank glowing orb Helga yells "run all of you" Tingle shocked whispers "Orion" crushes something in his hand and vanishes.... The large being assumingly the leader of the Unaligned Orion speaks in a booming voice "be free" Helga makes a save... (save succeed) Helga yells in response "Never I willingly serve Tingle and you shall be crushed under his power" (Helga attacks) Orion speaks once more (miss)"foolish undead DIE" (Hit) "You dare spill my holy blood DIE" Helga has to make another save (succeed)... "Never" Yells Helga before attempting another blow" Helga will attempting to kill Orion but can be convinced to flee using the logic of needing to be around to protect Tingle she also cares for the party and tells them to flee while they can. Orion whishes to kill the skeletons then capture the party in the case they don't escape they will be captured and taken to the head quarters cells where Eclairs Brother is also being held. after Helga is dead he will attempt to find Tingle Orion will not attack in the open in front of people as he wishes to remain hidden Orion has the ability to chase them as long as they teleport within 30ft of him (Justice always finds you) but will not reveal him self in a crowd and will simply disguise himself and attack again later. Tingle teleported to the Tavern using one of his magic marbles he can be found Crying curled up in a ball in his room any one who approaches him is at risk he feels threatened and will attack any one who gets too close (most likely with vampiric touch). The players can run but Orion is fast (120ft fly speed) and will chase through dimensions as long as Helga is alive he will not peruse.
If the players refuse to follow Orion into the trap Tingle is encouraging them to come with but if they refuse completely all this will take place without them and Tingle will return wounded.
Orion will eventually arrive in the tavern as once again the paladin hoping to convert Tingle to his side he will refuse to fight the players but with enough persuasion he may close the door and make an attempt on there life.