Character Profile: Ropponmatsu 1

Ropponmatsu 1 is the first of the two robots built for the SAA, Safety Assurance Agency, to be seen. She is built to look like an adult female. She was built to handle jobs that would endanger the human members of the SAA, such as disarming bombs. She is capable of identifing a bomb, even if the bomb is hidden inside another object. She is also capable of disarming said bombs, but failed to do so when she had to, which destroyed her. But, many exact copies of Ropponmatsu 1 have been ordered built, just in case some were destroyed.

Iwata Noriku has developed a crush on Ropponmatsu 1.

In one episode, a replacement Ropponmatsu 1 falls in love with Hyatt.