Megaman Other M
Intro
In 2011, Walpurgisnacht invaded Mitakihara Town. The magical girls Homura Akemi, Mami Tomoe, Sayaka Miki, and Kyoko Sakura fought bravely and sacrificed their bodies in the process. Leaving only their soul gems.
Unlike most timelines that Homura was in, this one is non-canon and she pretty much can't reverse time to restart again. Why? She's just a soul gem.
Years went by and Madoka Kaname has preserved their soul gems. Adopting some knowledge of robotics, she not only helped advance society, but also fight against witches so that she could collect grief seeds for her friend's soul gem.
Not only that, she used her knowledge of robotics to recreate new bodies for her friends. It wasn't an easy task and it took years. At least she got some functioning, though it was around when her time is almost up.
...
In the year 2091, a robot girl with purple armor and long raven hair opens her eyes. She was strapped to her pod and looked around. She then saw an old lady who looked familiar, but was shocked to see who it was.
Madoka: Its been a long time Homura-chan.
Homura: Ma...doka, you look different.
Madoka: It has been years, but I finally got you functioning. Same goes for Mami-san, Sayaka-chan, and Kyoko-chan. Sadly at the worst time.
Homura: Why?
Madoka: It would take 30 years to get your systems completely ready, but at that time... I would be dead.
Homura: After all I done, I had to see you die again.
Madoka: Worry not old friend. I found a way to extend my life. Though it would be in an inconvenient solution. I'm sorry about this.
Madoka immediately shut Homura off and then all of her latest creations. She went to a chair and teared up a bit. She puts on a helmet and presses a button. After some last moments of agony, Madoka Kaname is dead.
...
30 years has pasted and Madoka's creations finally awoke. The first thing they see is a familiar friend with pink twin tails. But more like a computer screen or hologram.
Hologram: My friends, you finally awoke. We have a lot of explaining to do.
...
These robots were vessels for Madoka's friends. They are no longer just magical girls, nor robot masters like the ones roaming around in this future. From the symbol of justice for all robots, these creations shall be named after the Super Fighting Robot, Megaman!
Homura Akemi: Megaman Crono
Mami Tomoe: Megaman Buster
Sayaka Miki: Megaman Blade
Kyoko Sakura: Megaman Phantom
They will still be called by their regular names, its just for fun.