After some adventures, our group changed a little:
Veran, Female Vampire Half-Elf Sorcerer (Arcane Bloodline)/Archmage, demigoddess of sorcery.
Derepidazirialexidilliane (Derpy Dash for her friends), Female Great Wyrm Red Dragon, Valet Familiar of Veran 
Mark, Male Orcish Abyssal-Blooded Tiefling Raging Paladin (Oath of Vengeance/Sacred Servant) of Ragathiel/Champion
Sandor, Old Grumpy Paladin Hound Archon of Ragathiel, planar ally of Mark.
: Has the Divine Source mythic ability with the Magic and Luck domains.
: Was a Faerie Dragon before being the target of a Polymorph Any Object by her mistress.
: Mythic Eldritch Heritage (Orc bloodline)
: Ragathiel's Rage Subdomain
Oh, and if you worry about the fate of our first paladin and our barbarian, the former died from a Color Spray enabled coup-de-grace to the face while the latter's player never showed up to the game.