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- Neiz from the Dragon Ball movie Cooler's Revenge who has the ability to retract his head into his body like that of a turtle.
- Minor example in The Keys Stand Alone: The Soft World when George becomes a nixie for a while. Paul notices that he doesn't have any genitalia in that form, and George deadpans, “It retracts. If I leave it out it attracts fish. It's useful to bring dinner over. Would you like to see it in action?” Paul can't tell if George is serious or not.
- Inspector Gadget 2 has this happen to Gadget when he ducks a punch in the face at a bar.
- In the film Lilo & Stitch, Stitch demonstrates this ability when taking refuge in a dog pound as seen above.
- In The Hitchhiker's Guide to the Galaxy, Zaphod retracts one of his heads into his chest from time to time.
- Kaiju movies starring Gamera, the flying turtle. Gamera can retract all four of his legs into his shell, then cause fire to spray out of the holes, allowing him to spin around and fly. He can retract his head into his shell the same way, and often does so while flying.
- Toothless from How to Train Your Dragon has retractable teeth, hence his name. In the sequel, he is revealed to also have retractable scales along his spine.
- An early Stephen Chow movie, The Royal Tramp, involved a battle with the Made of Iron villain who could even retract his manparts. But Stephen's character, having grown up in a brothel, learned how to counteract this by shoving something up the backdoor.
- The electronic devices in The Brave Little Toaster all have retractable faces, with the exception of Radio, who for some reason actually doesn't have a face.
- The title characters of Teenage Mutant Ninja Turtles (1990) all have the ability to do this. During the final Foot battle of the film, Mikey retracts his head into his shell to keep it from being taken off by a Foot mook's axe. "God, I love being a turtle!"
- The Future Is Wild has the Flish with a retractable second mouth.
- Slickribbons have the Flishes retractability brought Up to Eleven.
- In the James Bond book You Only Live Twice Bond visits a Japanese martial arts training facility, where the fighters have been trained to retract their testes, making them invulnerable to a groin attack. You really do this (if you're a male), but to a lesser extent than they show in the book.
- In The City and the Stars by Arthur C. Clarke, future humanity has been engineered so that male genitalia are stored internally when not in use.
- Dungeons & Dragons. Giant Snapping Turtles are noted as being able to retract their legs and head into their shell, thus improving their armor class.
- Sephiroth from Kingdom Hearts has a retractable black wing. Implied in the Final Fantasy VII series that his black wing is the same as in Kingdom Hearts.
- Genesis and Angeal from Crisis Core also have retractable wings.
- Generation V has the golem-like Golurk who is able to fly this way by retracting its arms and legs.
- Any Pokemon with the ability Withdraw.
- Darumaka in battle and in the anime can retract their limbs into their body, giving them the appearance of an egg. This is a reference to Daruma dolls (as their name indicates).
- One of Hoothoot's legs is retractable.
- Darkrai also has retractable legs.
- In Final Fantasy IV, the turtle monster Cagnazzo is a creepy example of this. He can collapse to invulnerable shell form, even though his beefy humanoid arms and legs are clearly too big to fit in his shell.
- Kefka from the Dissidia: Final Fantasy series has six retractable wings that only detract when he uses the attack "Havoc Wing".
- Algol from Soul Calibur IV has 3 on each side retractable kraken like clawed fingeresque tentacles that detract from his chest.
- A fun image on Neopets reveals Cybunnies can retract their heads into their body.
- Lilo & Stitch has Stitch with retractable antennae, back spines, claws, and second pair of arms.
- Several of Stitch's "cousins" also have this ability.
- Filburt from Rocko's Modern Life. Justified that he is a turtle.
- Gary from SpongeBob SquarePants also justified knowing he's a snail.
- Also happens to Craig Mammalton in the episode "Sun Bleached".
- Also happens to Patrick in the episode "Not Normal".
- CatDog has the titular character retract its body like a snail, there's only one episode where the play it rather... Gruesomely.
- Shendu from Jackie Chan Adventures normally has arms and legs, but for some reason he actually loses both after being turned into a statue thousands of years ago. He eventually gets his arms and legs back once he's been reverted back from his statue form.
- Most species of turtles and tortoises are able to retract their legs and neck inside of their shell.
- Snails can retract their whole body inside their shell. Moreover, they are also able to retract their eyes and horns inside their body.