When the Spelunker is swallowed by the Worm, they encounter many juvenile Worm Babies as they make their way through the body of the colossal adult.
Worm Babies are numerous in the level, but are also very weak.
They can be a problem in narrow tunnels or when they are above you, as they move fast and will crawl off ledges to chase the Spelunker. They may inadvertently crawl onto spikes or get trapped in pits, as they cannot jump.
Three Worm Babies are released from Worm Eggs when they hatch.
| Spelunky HD Monsters | |
| The Mines | Snake • Cobra • Bat • Spider • Spinner Spider • Giant Spider • Scorpion • Caveman |
| Jungle | Bat • Caveman • Tiki Man • Frog • Fire Frog • Giant Frog • Mantrap • Piranha • Old Bitey • Killer Bee • Queen Bee • Snail • Monkey • Jiang Shi • Vampire |
| Haunted Castle | Jiang Shi • Green Knight • Black Knight • Vampire |
| Worm | Bacterium • Worm Egg • Worm Baby |
| Ice Caves | Yeti • Yeti King • Mammoth • Alien • UFO • Alien Lord |
| Mothership | Alien • UFO • Alien Tank • Alien Lord • Alien Queen |
| Temple | Cobra • Scorpion • Caveman • Hawk Man • Croc Man • Magma Man • Scorpion Fly • Mummy • Anubis |
| City of Gold | Anubis II |
| Olmec's Lair | Olmec |
| Hell | Bat • Jiang Shi • Vampire • Magma Man • Vlad • Imp • Devil • Succubus |
| Yama's Throne | Horse Head • Ox Face • King Yama |
| Miscellaneous | Skeleton • Damsel • Shopkeeper • Tunnel Man • Scarab • Golden Monkey • Ghost |
| No Journal Entry | Critters • Hired Hand |