A Headquarters, Somewhere
"This is possibly going to be a little flashy. And maybe noisy," said Diana, and she walked into the center of the room and pressed some buttons on her phone.
A horse emerged. Well. Not really. It was robotic. Also, it wasn't walking-- it was hovering, using four legs with small thrusters to maneuver. The neck was slightly articulated, but it was all for show-- the horse was just there to provide transportation. Much simpler than her broom had been, but also more comfortable to ride.
She reached out and touched a saddlebag, and armor flowed out of it, clicking and clanking as it formed around her body. She pulled a helmet out of the horse's side and put it on her head, finishing by taking a sword and shield that were clipped to the horse as well. The sword crackled with electricity.
"And here we go," she said. "Cyber-Knight, complete with Thundersword. The helmet doesn't auto-fit because I needed all the space in it for sensors, environmental devices, and com gear. Sword and shield have tiny motors that help guide them to make up for all the fighting experience I don't have."