Finder

Finder, A.K.A. Experiment 158, is an illegal genetic experiment created by Jumba Jookiba. He is designed to sniff out and track any missing person or item. His one true place is operating a Lost and Found service at the beach. Finder is voiced by Frank Welker.

Personality
Finder is a resourceful, helpful and beneficial tracker, and doesn't like being doubted by other people. He is also friendly, innocent and brave.

Lilo & Stitch: The Series
Experiment 158 was the 158th genetic experiment created by Jumba with Hämsterviel's funding. He was designed to sniff out any lost or missing person or item.

158 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.

All of the experiment pods were released and scattered across the island of Kauai.

At an unknown point after this, Experiment 158 was activated.

When Lilo and Stitch met 158, the former named him Finder and took him home. Finder demonstrated his skills by finding Nani's keys and several other things around the house, which made Stitch envious.

Later, Lilo used Finder for show-and-tell at her school, where he quickly found all of the hula girls' lost belongings, much to Mertle's jealousy.

When Hämsterviel later escaped from prison and traveled to Earth, the Grand Councilwoman contacted Jumba and Pleakley and assigned Finder to track the fugitive. Stitch wanted to prove he was the better tracker, and set out to upstage Finder. When both cousins were debating over which trail led to Hämsterviel, Lilo went with Finder, despite Stitch's protests.

Finder tracked Hämsterviel to the Edmonds' house, but Lilo had doubts about Finder's accuracy. However, Mertle had discovered Hämsterviel at a pet shop earlier. She mistook him for a talking gerbil and adopted him for show-and-tell. Hämsterviel, of course, became enraged and had a falling-out with Mertle, but eventually adjusted to his new life in a cage.

When Mertle tried to cover up for Hämsterviel (after hearing Lilo question his presence), Lilo was convinced that Finder had made an error. Stitch, who knew the truth, attacked Hämsterviel later that night, but the latter blasted Stitch with a makeshift cannon, knocking him unconscious. The noise alerted Mrs. Edmonds, who noticed Stitch and took him to the dog shelter.

The next day, Lilo and Finder arrived at the dog shelter to retrieve Stitch, who revealed to them that Finder had indeed tracked down Hämsterviel.

Lilo, Stitch and Finder returned to the Edmonds' home to discover that Gantu had fled with Hämsterviel in his ship, but also kidnapped Mertle. Stitch and Finder then decided to team up to rescue her. Using his helicopter-like flying ability, Finder tracked down Gantu's ship while carrying Stitch, who then disabled the ship, thereby saving Mertle.

Hämsterviel was arrested, but due to Gantu's blunder, the Grand Councilwoman (who had enlisted Gantu's help in capturing Hämsterviel earlier) did not reinstate him to his former position.

Shortly after, Finder was found a one true place operating the beach Lost and Found service.

In "Drowsy", Finder's picture was seen in Lilo's experiment scrapbook.

In "Skip", Finder was one of the wanted fugitives in an alternate future where Hämsterviel ruled Earth.

In "Ploot", Finder was one of the second team of experiments (along with Babyfier and Drowsy) formed to try and stop Ploot. However, Ploot was easily able to defeat them, forcing the three experiments to retreat.

In "Snafu", Finder was one of the experiments who joined Lilo and Stitch on a mission to rescue Gantu's captive experiments. Finder helped break into the ship and free the captive experiments.

Leroy & Stitch
The first 624 experiments, including Finder, were rounded up by Leroy and taken to a stadium to be destroyed. However, Lilo, Stitch, Jumba, Pleakley, Reuben and Gantu arrived before the experiments could be destroyed.

Finder participated in the following battle between the experiments and the Leroy clones.

The Leroys soon gained the upper hand in the battle, but were defeated when Lilo, Stitch, Reuben and several other experiments performed the song "Aloha `Oe," which caused the Leroy army to shut down due to the original Leroy's fail-safe.

Trivia

 * Finder is Experiment 158. However, in his debut, he is called 458, most likely due to Jumba's untidy database.
 * Finder's pod color is purple.
 * Finder is described by the experiment computer screen as, "Experiment 158 Primary function: Finds lost things."
 * Finder's ears appear in the game Jumba's Lab.