The following creatures do not appear in the list of monsters within the compendium as from the D&D 5th edition monster manual. A: Aarakocra, Abominable Yeti, (Acererak: Demilich template), Adult blue Dracolich, Ankylosaurus, Arcanaloth. B: Banshee, Barlgura, Beholder, Beholder Zombie, Blue Slaad, Bone Naga, Bugbear Chief, Bullywug. C: Cambion, Carrion Crawler, Cave Bear, Chasme, Crawling Claw, Cyclops. D: Dao, Death Knight, Death Slaad, Death Tyrant, Deep Gnome, Demilich, (Diseased Giant Rats: Giant Rat Template), Displacer Beast, (Dracolich: template), Drow Elite Warrior, Drow mage, Drow Priestess of Lolth, duodrone. E: Empyrean. F: Faerie Dragon, Fire Snake, Flame Skull, Flumph, Fomorian. G: Galeb Duhr, Gas Spore, Gythyanki Knight, Gythyanki Warrior, Gythzerai Monk, Githzerai Zerth, Gnoll Fang of Yeenoghu, Gnoll Pack Lord, Goblin Boss, Goristro, Grey Slaad, Green Slaad, Grell Grick Alpha. H: (Half-Dragon: Template), Half-Ogre,Half-Red Dragon Veteran, Helmed Horror, Hobgoblin Captain, Hobgoblin Warlord, Hook Horror. I: Intellect Devourer, Invisible Stalker. J: Jackalwere. K: Kenku, Kuo-toa, Kuo-toa Archpriest, Kuo-toa Whip. L: Lizard King/Qween, Lizard Folk Shaman. M: Manes, Marid, Mezzoloth, Mind Flayer, (Mind Flayer Arcanist: Template), Monodrone, Mud Mephit, Myconid Adult, Myconid Sovereign, Myconid Sprout. N: Needle Blight, Nothic, Nycoloth. O: Orc Eye of Gruumsh, Orc War Chief, Orog. P: Pentadrone, Peryton, Piercer, Pixie, Poltergeist, (Psychic Gray Ooze: Template), Pteranodon. Q: Quadrone, Quaggoth, (Quaggoth Spore Servant: Template),(Quaggoth Thonot: Template). R: Red Slaad, Revenant. S: Saber-Toothed Tiger, Sahuagin Baron, Sahuagin Priestess, Scarecrow, Shadow Demon, (Shadow Dragon: Template), Slaad Tadpole, Smoke Mephit, Spectator, Spined Devil. T: Thri-kreen, Tridrone, Troglodyte, Twig Blight. U: Ultroloth, Umber Hulk. V: Vine Blight. W: Water Weird, Will-o'-wisp, Winged Kobold. X: N/A Y: Yeti, Young Red Shadow Dragon, Young Remorhaz, Yuan-ti Abomination, Yuan-ti Malison, Yuan-ti Pureblood. Z: N/A I've also noticed that no creature from any of the official D&D 5th edition supplements are present either. Do you plan on adding them to the compendium at some point in the future?