250px-501 Yin
Vital statistics
Title experiment 501
Gender female
Race genetic experiment
Function designed to attack with bursts of water
Health normal
Level ....
Status good
Location with 502

Physical Appearance

Yin (Experiment 501) is a blue female octopus-like experiment with eight waterhose-like tentacles.

Primary Function

She is able to condense moisture in air into water or fire off water from a found source. She can then shoot powerful water jets from her tentacles for as long as the source remains.

It was believed that when she came into contact with Yang, it would create a large explosion. Later, it was found that water and magma was actually a good combination.


  • Removing the primary source of water


  1. Lilo and Stitch: The Series: Season 1, Episode 9 (as one of the two primary new cousins)
  2. Lilo and Stitch: The Series: Season 1, Episode 27 (at Lilo's sleepover party)
  3. Lilo and Stitch: The Series: Season 2, Episode 4 (fills pool for the new Bed-and-not-breakfast)
  4. Lilo and Stitch: The Series: Season 2, Episode 8 (a member of Stitch's team to take down Gantu when he becomes king)
  5. Leroy and Stitch (at the stadium after being captured by Leroy)
  6. Season 2 opening of Stitch!


Emits a watered down laugh and a series of sloshing and croaking sounds. However, this is only when she has taken in water; her voice while empty is unknown

One True Place

Yin then teams up with Yang to make an new island as an example to David.

She is later captured by Dr. Jacques von Hämsterviel in Leroy & Stitch and later helps Yang defeat several Leroy


  • Yin was activated at the same time as Yang, being his opposite in every manor.
  • She resembles an octopus because she has eight tentacles.
  • Yin's experiment pod is blue.
  • When she gets surprised, her eyes grow bigger and her tenticles stretch out.
  • Yin's primary function is Water Sprayer.
  • Yin wears pajama's in the episode "Dupe," they are a pink bath robe with a pink night cap.
250px-501 Yin

yin yin

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