Size

Unit size		Sub-tiles Size 1 2 3 Size 1 5 13 Target 1 1 1 Collision 1 5 9 Obstacle 1 1 5
[[File:Obstacles.png|frame|left|[[D2 Fangskin|Template:D2 Unique bold]] (size 3) is too large to follow the Werebear (size 2, despite his sprite size) up the stairs. If there were any size 3 monsters in the Arcane Sanctuary other than the [[D2 Summoner|Template:D2 Unique bold]], they would have a similar problem.]]

Size 1

Animal	Construct
Sand Maggot Egg	Template:D2 Unique bold bone prison Flying Scimitar Lightning Spire Mummy Sarcophagus

Size 2

Animal	Undead	Demon	Construct
[[D2 Izual|Template:D2 Unique bold]] [[D2 Korlic|Template:D2 Unique bold]] [[D2 Madawc|Template:D2 Unique bold]] [[D2 Nihlathak|Template:D2 Unique bold]] [[D2 Talic|Template:D2 Unique bold]] [[D2 Uber Izual|Uber Template:D2 Unique bold]] Bat Demon Blood Hawk Frog Demon Giant Mosquito Hell Bovine Leaper Sabre Cat Sand Maggot Young Slinger Spike Fiend Swarm Carrion Bird Winged Nightmare Zakarum Priest Zakarum Zealot	[[D2 Griswold|Template:D2 Unique bold]] [[D2 Radament|Template:D2 Unique bold]] Abyss Knight Bone Fetish Doom Knight Greater Mummy Mummy Oblivion Knight Reanimated Horde Skeleton Skeleton Archer Skeleton Mage Vampire Undead Scavenger Willowisp Wraith Zombie	[[D2 Blood Raven|Template:D2 Unique bold]] [[D2 Diablo clone|Template:D2 Unique bold clone]] [[D2 Hephasto the Armorer|Template:D2 Unique bold]] [[D2 Smith|Template:D2 Unique bold]] Corrupt Rogue Corrupt Rogue Archer Corrupt Rogue Spearwoman Council Member Demon Imp Fallen Fallen Shaman Festering Appendage Fetish Fetish Shaman Goatman Pain Worm Putrid Defiler Stygian Fury Succubus Vile Child Hell Buzzard	Gargoyle Trap Trapped Soul

Size 3

Animal	Undead	Demon	Construct
[[D2 Coldworm the Burrower|Template:D2 Unique bold]] [[D2 Summoner|Template:D2 Unique bold]] Abominable Baal's Minion Baboon Demon Blood Hawk Nest Blood Lord Claw Viper Death Mauler Frozen Horror Giant Spider Sand Maggot Sand Raider Scarab Demon Siege Beast Suicide Minion Tentacle Beast Thorned Hulk Wendigo	Finger Mage	[[D2 Andariel|Template:D2 Unique bold]] [[D2 Baal|Template:D2 Unique bold]] [[D2 Baal clone|Template:D2 Unique bold clone]] [[D2 Diablo|Template:D2 Unique bold]] [[D2 Duriel|Template:D2 Unique bold]] [[D2 Lilith|Template:D2 Unique bold]] [[D2 Mephisto|Template:D2 Unique bold]] [[D2 Uber Baal|Uber Template:D2 Unique bold]] [[D2 Uber Diablo|Uber Template:D2 Unique bold]] [[D2 Uber Duriel|Uber Template:D2 Unique bold]] [[D2 Uber Mephisto|Uber Template:D2 Unique bold]] Hell Spawn Blunderbore Megademon Minion of Destruction Overseer Regurgitator Frenzied Hell Spawn Vile Mother Tainted	Barricade Barricaded Door Barricaded Tower Catapult Evil Demon Hut Fire Tower Prison Door Window