UKI is Liz's malfuncting SIR unit. She has the personality of GIR, only girlier.
Personality
UKI loves pizza, jokes, piggies, tacos, biscuits, lava lamps, hair dryers (she likes the wind), cool socks, candy, TV, bubble gum, and many other things. She often messes up Liz's plans like when she broke the wires to Liz's computer. She is best friends with GIR, like her master is best friends with Zim, though it is shown that she may have a crush on GIR.
Appearance
UKI looks pretty much like GIR, except she has pink parts and a pink bow where her antennae should be. When
UKI in her normal appearance
she's in duty mode, she turns red, including her bow.