The duo are employed by Watanabe Entertainment, and are mainly active in Tokyo.
Tanaka and Yamane met each other at a travel focused circle in university and became friends with similar hobbies.
Tanaka moved to Tokyo in early 2000, and Yamane followed one month after.
After successfully passing the audition for Watanabe Entertainment, the unit officially formed and began activities in 2002.
[3] From 2004 and onward, Ungirls appeared on various variety shows and were known for their unique "gross" and "unsettling" characters.