This enemy is a force to be reckoned with: she has huge amounts of health, great DPS and only a few knockbacks. Thankfully she is considered a black enemy, which means she is affected by Anti-Black Cats. Pizza Cat is a good idea to bring up against this unit, however don't try and use Bombercat to freeze her, as Bombercat is outranged.
Dark Lazer references Darth Vader, a character from Star Wars. Thus, she has a red lightsaber.
The blue lightsaber from the cat unit shows that she now joins the good side of The Force.
However, in the actual movie it was the other way around. Darth Vader started off as Anakin Skywalker and was on the light side but joined the Dark Side and became Darth Vader