Teena

Golden Age Origin
Dot was the freind and secretary of Rod Hathway, a wealthy philanthrapist who fought crime as Avenger, The Space Detective. She accompanied him on his missions, using the alternate identity of "Teena." The two had many adventures and solved many crimes, operating out of the city of Great New York around the year 2255 (300 years in the future).

As Teena, Dot carried a ray gun and a variety of high tech gadgets such as an x-ray vision gun.

Golden Age Appearances
The Space Detective #1-4