Companions

All listed locations are confirmed. Better images to come in the future when I stop being lazy or bully someone else into it.
Image Nickname Tier Known Zones Flying/Non-Flying
Ant 1 Troll Bridge, Ashen Trail, Spruce Woods, Grasslands, Orc Camp, Beach Cliffs, Pit of Eternity, Ridge Mountains Non-Flying
Tarantula 2 Abandoned Docks, Troll Bridge, Ashen Trail, Spruce Woods, Mosslands, Grasslands, Plains, South Dread Mountains, Orc Camp, North Passage, Moss Dungeon Level 2, Active Volcano, Orc Fortress, Tundra Wastelands, Snake River, Merfolk Dungeon Level 1, The Great Dam Non-Flying
Triangle Spider 3 Abandoned Docks, Traveler's Way, Troll Bridge, Ashen Trail,Scorchedlands, Spruce Woods, Mosslands, Grasslands, Plains, South Dread Mountains, Petrified Forest, Orc Camp, North Passage, Moss Dungeon Level 2, North Dread Mountains, Active Volcano, Lavalands, Orc Fortress, Halcyon River, The Great Dam Non-Flying
Treehopper 4 Abandoned Docks, Traveler's Way, Troll Bridge, Ashen Trail,Scorchedlands, Fern Grove, Spruce Woods, Mosslands, Moss Dungeon Level 1,Grasslands, Plains, South Passage, South Dread Mountains, Petrified Forest,Orc Camp, North Passage, Moss Dungeon Level 2, North Dread Mountains, Rocklands, Active Volcano, Lavalands, Obsidian Swamp, Moss Dungeon Level 3, Orc Fortress, Halcyon River, Ogre Foothills, North Lake Non-Flying
Rhinoceros Beetle 5 Abandoned Docks, Traveler's Way, Scorchedlands, Fern Grove, Mosslands,Moss Dungeon Level 1, Plains, South Passage, South Dread Mountains, PetrifiedForest, North Passage, Moss Dungeon Level 2, North Dread Mountains,Rocklands, Active Volcano, Lavalands, Obsidian Swamp, Moss Dungeon Level 3,Orc Fortress, Halcyon River, Ogre Foothills, North Lake Non-Flying
Praying Mantis 6 Traveler's Way, Scorchedlands, Fern Grove, Moss Dungeon Level 1, SouthPassage, Petrified Forest, North Dread Mountains, Rocklands, Lavalands,Obsidian Swamp, Halcyon River, Ogre Foothills, North Lake Non-Flying
Longhorn Beetle 7 Fern Grove, Moss Dungeon Level 1, South Passage, Rocklands, ObsidianSwamp, Ogre Foothills, North Lake Non-Flying
Blue Caterpillar 8 Endless Canyon, Faerie River Non-Flying
Roach 9 Faerie River Non-Flying
Click Beetle 10 Faerie River Non-Flying
Firefly Larva 11 Merfolk Dungeon Level 3, Fungi Forest, Faerie River Non-Flying
Purple Stinkbug 12 Goblin Swamp, Merfolk Dungeon Level 3, Fungi Forest Non-Flying
Silverfish 13 Goblin Swamp, Fungi Forest, Forest of No Return, Dungeon of Ruins Level 2, Halcyon River Mouth Non-Flying
Earwig 14 Goblin Swamp, Merfolk Dungeon Level 3, Fungi Forest Non-Flying
Plague Rat 15 Goblin Swamp, Dungeon Abyss 2, River Bridge Non-Flying
Tick 16 River Bridge Non-Flying
Moth 17 Vampire Dungeon Level 4 Flying
Flying Ant 18 Dead Man's Valley, Dungeon Ruins Level 1 Flying
Mosquito 19 Dead Man's Valley, Vampire Dungeon Level 4 Flying
Ladybug 20 Dead Man's Valley, Vampire Dungeon Level 4, Dungeon Ruins 1 Flying
Butterfly 21 Dead Man's Valley Flying
Snail 22 Redwood Forest, Dungeon Abyss Level 1 Non-Flying
Waterbug 23 Redwood Forest, Dungeon Abyss Level 1, Castle Ruins Non-Flying
Spiky Beetle 24 Redwood Forest, Dungeon Abyss Level 1, Blood Lake, Castle Ruins Non-Flying
Hanar 25 Vampire Dungeon Level 3, Redwood Forest, Dungeon Abyss Level 1, Blood Lake, Castle Ruins Non-Flying
Squid 26 Vampire Dungeon Level 3, Blood Lake Non-Flying
Werewolf 27 Blood Lake Non-Flying
Quetzalcoatlus 28 Endless Canyon Flying