In "Shortstuff", the ray was used to enlarge Stitch, who wanted to be bigger than his normal size. However, due to interference from Experiment 297 (Shortstuff), the ray not only enlarged Stitch, but Shortstuff as well. Stitch was later shrunk back to his normal, functional size with Jumba's ray so he could defeat Shortstuff when the latter went on a rampage at the carnival. Gantu somehow got a hold of Jumba's ray and used it to enlarge Reuben into a behemoth. He then commanded the gigantic Reuben to crush Lilo and her ʻohana. Instead of following Gantu's orders, Reuben plodded over to the enormous submarine sandwich that he noticed earlier and began eating it hungrily while sitting on top of a humiliated Gantu.
In "Poxy", the ray was used to shrink Lilo and Stitch to microscopic size so they could travel inside Pleakley's body and extract Experiment 222 (Poxy), which was making Pleakley sick. The ray was also used to shrink Gantu when he attempted to crush a delusional Pleakley for beating him up.