Lumière

While on the run with Éclair, she was even able to defeat the D-Command (an electronic warfare program designed to incapacitate rouge ES agents) by hacking her own nanites so as to develop an immunity.

Lumière is often the person who sits at the side during missions, she spends a lot more bonding time with Armbrust than Éclair. She is also far more intelligent than Éclair and on numerous occasions, things that are obvious to Lumière and the audience are not obvious to Éclair, but she has more than one experiences when her life was in major danger because she has no physical ability. Her weapon of choice is a COP 357 Derringer.

Lumière has also been the subject of numerous rebirths over the last 200 years, but unlike Éclair, has never had her memories erased. It is not described if they are reborn at the same time or separately, but in one flashback, Lumière is shown showing Éclair the ropes around the GOTT after Éclair had her memories erased. Lumière takes this fact far better than Éclair, who has been shown to have had mad fits over this. Her true power is the G Class ability "Particle", which enables her to control matter at the subatomic level. This ability is so draining that most of the time she is unable to make use of it.

A side effect of "Particle" is that her body will morph into an older version of herself (the one time she uses this in the series, she briefly assumes a body that is about the same size and apparent age as Éclair).