The main superpower system in my book is blood transmutation stuff courtesy of
hematologist aliens. If they have these aliens in their bodies, they’ll be ageless, immune to illness/infection and physical pain, and granted superhuman strength, agility, regeneration, and various superpowers. Corpses that are given these aliens will become some sort of zombies.
Depending on the aliens’ specialties, the powers can be anything. As long as you don’t run out of blood, you’re good.
There is such a thing as summoning nagas (snake people) of various sizes and powers, transforming own fingers into stretchy snakes, and coating own body in tough scales. Can also unsummon the nagas by forcing them to shatter (they’re more like porcelains than an organic being) and inhale/consume the remains to replenish own blood supply.
There is shadow manipulation in the upcoming arc. The wielder can “melt” into shadows before transforming into anything, including a shadow copy of the foe. The weakness is that shadow can’t exist without light, but the proud wielder doesn’t call himself “Lightbringer” for no good reason… Yes, he can summon an orb of light for illumination by himself.
Then there is also barrier power that has been teased in the previous arc. For now, it’s just auto barrier for defensive purposes, but later on there are barriers for offensive purposes. The wielder can shatter the barrier at will or let the foe smash the barrier to counter with a shock wave and a barrage of super sharp barrier shards. The barrier can also be infused to the body to greatly increase physical strength and durability.
Other power system that is about to play a major role in the upcoming arc is the “Overheat System.” Now, no blood is required, but every time the wielder uses a superpower, some heat will be added to the system. Overheating will disable everything and reduce natural durability for a while, but in some cases, the wielder can keep going with a lot of extra speed.
However, Overheat System comes alongside “Heat Converter” and “Cold Converter.” The former absorbs any heat-based attacks (fire, lightning, etc) and converts them into heat, while the latter absorbs any cold-based attacks (water, ice, etc) and helps cooling off the system.