Space Creatures

Space creatures are the most powerful species in the universe, and are the dominant life-form in the universe, controlling all the kingdoms and other species.

Overview
Space creatures are the dominant "species" of the universe. They are comprised of countless sub-species, which bear startling resemblance to so-called normal animals (for example the space creature Liony looks like a lion, as you probably guessed from the name). They are extremely powerful creatures, able to withstand brutal attacks that would kill most other creatures, and are basically gods compared to humans. They are also the only species in the known universe which revives upon death without need for a reincarnation ritual, as is the case with phoenixes. For this reason they have over countless eons "evolved" to treat death very lightly, even going so far as to making a sport out of it, dueling to the death in aptly named arenas. Additionally, the most powerful among them possess the ability to revive other organisms, which is perhaps why they treat the countless lesser species under their control (like humans) so carelessly. Space creatures are also some of the most violent beings in the universe, mortally wounding and killing each other frequently.

Life Cycle
Space creatures mature similarly to other species. First, depending on their parents, the Space creature will either be in a womb or in an egg, and after some time they will either hatch or be born. After that, they're kids, them adolescents, then adults. Space creatures can revive after death, within bounds (see Mega Death and Perma Death).

Maturation
Although Space creatures mature similarly to other species, they do it much slower than other species. It is suspected that because they can live for so ridiculously long, they evolved to mature slower so they would have more time to learn about their environment and master their skills.

Space creatures enter adolescence when they are 3 billion years old. When they are about 4 billion years old, they have almost reached the end of adolescence and are considered legal adults (at least, in most Space creatures societies, they are). Their growth slows down dramatically when they turn 4 billion years old, but it never stops until they get really, really old. However, growth slows down even more dramatically when a Space creature reaches 8 billion years old, so 8 billion is commonly considered the age when a Space creature is fully grown. Most Space creatures societies require their people to stay in school, at least part time, until they are 8 billion years old because of the sheer amount of knowledge they have to teach their kids, and also to give them an excuse to not start working until they are fully grown and have reached their full strength.

The average Space creature lives for 5 trillion years.

Mega Death
Space creatures would be immortal if it weren't for Mega Death and Perma Death. Reviving endlessly when you die is simply not possible. If a Space creature sustains a brutal enough blow, they will Mega Die, in which case they will not revive until a more powerful space creature with the ability of reviving others comes to bring the Mega Dead Space creature back to life. Since there are very few of these Space creatures, Mega Death is a very large concern for most Space creatures, yet they seldom worry about it until they accidentally Mega Kill their friend during a death duel.

Mega Dead Space creature bodies still heal themselves quickly as if they were reviving, but they never regain consciousness unless manually revived by a powerful Space creature. If left unrevived for long enough a Mega Dead Space creature will progress to Perma Death (see below).

Perma Death
Perma Death is the one true death of a Space creature, where it is impossible for even the most powerful among them to revive a Perma Dead Space creature. Perma Death happens most frequently due to old age. A Space creature never stops growing (until they're really old), so the oldest among them are usually the most powerful—yet as they age, eventually there comes a point where their body can barely produce enough magical energy to revive. When this happens they start to shrivel into old raisins and they are much weaker. Old age is the greatest annoyance to a Space creature, since they shrivel into old raisins very painfully and then revive just to experience it again. Eventually, there will come a time when they shrivel into an old raisin and fail to revive ever again. Another cause of Perma Death is repeatedly causing fatal damage to an already Mega Dead Space creature. Killing a Mega Dead Space creature body while it's trying to heal itself will cause extreme magic energy loss. If repeated enough times this will result in Perma Death.

Fun Fact: the oldest age ever achieved by a Space creature was King Cecil, Liony's great-grandfather, who lived to be 5.21 trillion years old.

Semi Space Creature Status-Granting
Some of the strongest Space creatures have the ability to grant Semi Space creature status to non-Space creature organisms. Semi Space creatures are exactly like normal creatures, except for the fact that they, like real Space creatures, revive when they die. For this reason, many Space creatures either grant Semi Space creature status to their pets or exceptional servants, or hire other Space creatures to do so. Similarly to real Space creatures, Semi Space creatures cannot revive endlessly and will eventually Perma Die of old age, and can Mega Die if they sustain too much damage.

Reviving
Some of the strongest Space creatures have the ability to manually revive other organisms, including Mega Dead Space creatures or Semi Space creatures. Reviving is a more common ability than Semi Space creature status-granting, but its uses are limited. Reviving is only useful when you want to bring something that doesn't automatically revive when it dies back to life. However, reviving's most notable use is bringing back Mega Dead Space creatures and Semi Space creatures back to life.

Society
Space creatures founded each of the kingdoms in the universe. They initially enslaved the other species, but thankfully this is becoming much rarer in the present and other species tend to work for the Space creatures willingly nowadays.