A homebound boy with little ability to walk, Cherry's wanting to still interact with the outside world resulted in a heavy special interest in drone technology, to the point that he's learned how to mod his own. With several cameras to look around, a powerful self-repair system, a working range of up to fifty kilometers, and a proprietary storage that can somehow contain entire, meter-long weapons in its small container, the drone gives Cherry quite the power...
...A power he's fully aware of, as whenever he uses it, his shy, meek self turns into an obnoxious posting machine, with a text-to-speech loudspeaker outputting every single insult he slings out with his keyboard. (For the purposes of differentiating the two, their respective color schemes change.)
With the power of having a whole-ass claymore that somehow hides in a small drone, Cherry operates as the closest thing this game can possibly have to a flying unit, able to ignore silly human problems like “stairs”, and instead having other, less human problems, like “having medkits be completely useless” and “input latency making it impossible to hit things”.
Automatically heals up to full HP at the end of a fight, or between waves. Allies cannot use support items on him.
Causes a status effect that makes the target only attack Cherry.
Who knows how much damage it'll do, but it's not going to miss.
Hits hard, but takes half the damage dished out in self-damage.