[x] Plan Let's Be A Rock
[x] Slate
[x] Female (or as female as a sentient rock can be)
[x] Gem - A race of sentient minerals that form bodies out of hard light projections. Capable of freely reshaping themselves, generating weapons from nothing, and possessing a default strength exceeding a human, Gems are dangerous, especially to those unaware of their nature or unfamiliar with their species. Unless the Gem itself is shattered, any fatal wounds simply cause the Gem's hard light body to retract inside the stone that is its true from, to be restored at a later time.
[x] Loyalty - You're one of those few that actually respects and admires Lord Freeza. What a weirdo. It's all because, at some point in the past, Lord Freeza himself picked you out as having potential above that of your peers. Naturally, you can't let Lord Freeza down after that and now you want to prove yourself worthy of his notice.
Edit: For the record, that's only touching on the abilities of Gems. Many Gems have abilities unique to themselves, and that's before Gem fusion gets involved. Then there's Gem technology, which involves things like teleportation, faster than light space travel, and weaponry that's frequently so fine-tuned to work against other Gems that it doesn't affect non-Gem life forms but will take out other Gems with one hit.