Missing units, ordered by power ranking:
A: Greenscales.
A-: Agent Skahen, Fire Elemental, Sgt Drake (SotM).
B+: Capuans, Crixus, Eltahale, Finn, Goblin Cutters, HSB, Kurrok, Moltenclaw, Othkurik, Samuel Brown, Sir Hawthorne, Spartacus, Spiderman, Torin, Venoc Vipers, Venoc Warlord, Water Elemental.
B: Abomination, Arkmer, Ana Karithon, Ice Troll Beserker, Incredible Hulk, Iron Golem, James Murphy, Marrden Hounds, Marro Drones, Ogre Warhulk, Omnicron Repulsors, Omnicron Snipers, Protectors of Ullar, Raelin (SotM), Siege, Tandros Kreel, Ulginesh, White Wyrmling.
B-: Air Elemental, Anubian Wolves, Deathknights of Valkrill, Deepwyrm Drow, Earth Elemental, Emirroon, Estivara, Feral Troll, Granite Guardians, Iron Man, Johnny "Shotgun" Sullivan, Jorhdawn, Kato Katsuro, Quasatch Hunters, Retiarius, Sir Denrick, Su-Bak-Na, Thanos, Werewolf Lord, Wyvern, Zettian Guards.
C+: Agent Carr, Ashigaru Yari, Brandis Skyhunter, Chardris, Dr. Doom, Erevan, Evar Scarcarver, Frost Giant, Fyorlag Spiders, Greater Ice Elemental, Kumiko, MacDirk Warriors, Master of the Hunt, Master Win Chiu Woo, Mika Connour, Morsbane, Ninjas of the Northern Wind, Red Skull, Sharwin Wildborn, Sir Dupuis, Sujoah, Tul-Bak-Ra, Valguard, Wolves of Badru.
C: Dumutef Guard, Elite Onyx Vipers, Gorillinators, Iskra, Kee-Mo-Shi, Khosumet the Darklord, Mind Flayer Mastermind, Parmenio, Pelloth, Rechets of Bogdan, Shaolin Monks, Sudema.
C-: Dzu-Teh, Deathwalker 8000, Deathwalker 9000, Dünd, The Einar Imperium, Empress Kiova, Grok Riders, Roman Archers, Sahuagin Raider, Shades of Bleakewoode, Templar Cavalry, Warden 816.
D: Deadeye Dan, Major X17, Marro Drudge, Moriko, Obsidian Guards, Shiori.
F: Deathwalker 7000, Hatamoto Taro.