DYNAMO

The Dynamic Nanotechtronic Monobot, or Dynamo for short, is a robot Professor Utonium and Davis created to help The Powerpuff Girls.

Background
After the girls defeated an incredibly strong monster, the Professor's over protective parenting skills kick in. As a result, he and a reluctant Davis created Dynamo to help the girls defeat monsters. Though the girls were reluctant to use it, they eventually did so when the Professor threatened to ground the girls if they didn't use Dynamo. Though the monster was defeated, the Dynamo itself did extensive damage to the city, leading the Mayor to demand they never use it again.

Though the Professor didn't destroy it out of sentiment, but kept it as use of a last resort. But it has also been used as a time machine.

Powers/Weapons
The robot has all the girls' fighting styles and also has an arsenal of many weapons including missiles, a bow that can be used as a pair of scissors, and it can curl up into a ball for defense. Her power largely exceeds the Powerpuff Girls, who control her by piloting from the inside, and she can also achieve impressive feats such as traveling through time and different dimensions. Due to her extremely destructive power and the girls' distain for using weapons to fight, she is usually only used as a last resort.