Personally I'm going with micro crabs
Exactly like people but really buff and with spiky hair than changes color if they yell for like 3 episodes.
Is there any explanation for that? Like are saiyains and humans descendents of the same pan-galactic species?
The hand lasers are a trainable skill by any species in the dragon ball universe, everybody has ki.
But for a certain value of biology, it is. Ki is the life force of all living things in the Dragon Ball universe, from grass and trees to dragons and gods, even androids. The biology of Dragon Ball is inextricably linked to ki and is not a natural biochemical phenomenon driving from physical laws like in the real world.
sure but I don't think Toriyama thought very hard about the biology
Evolution doesn't exist in Dragon Ball, at least not as the origin of peoples. There are these gods called kais that have creation power, and they're bipedal humanoids, so they made various peoples vaguely in their image.
Considering that they are the most prolific lifeforms on earth this is a solid bet
Unfathomable monstrosities.
Aliens would be from an independent line of evolution. Maybe trilateral symmetry dominated in their history. Maybe they operate at a different speed of thinking (10x faster or slower) so there's no way to communicate in a way that's natural for us. Maybe they're squishy on the outside. Maybe they're a colony of 5 different organisms and aren't symmetrical at all. Maybe they have nothing resembling a head. Maybe they'd look like goo to us.
We anthropomorphize aliens because we use them to tell stories about ourselves. Realistically they'd be nothing like us.
To the extent that there are universal evolutionary "good tricks" for organisms to chance upon, there might be some similarities if we're talking about life forms with an intelligence "on par" with ours (however you measure it). Some examples might be having vision or vision-like sensory input and the organs for that located towards the top of the organism, some kind of appendage with the dexterity to manipulate and rotate objects, and something akin to Chomsky's whole bit about being able to recursively nest concepts and linguistic units inside one another.
A given hypothetical alien may have an entirely different chemical base or not be chemical at all in the sense we'd understand it. Their senses for, say, light, could be made from entirely different strategies.
To your point, look at octopus eyes vs. mammalian (or even fish) eyes. Both evolved independently with likely little more than light-sensitive patches of cells but ended up with similar "solutions" of an enclosed orb with a lens and light sensitive array of cells at the back.
But we should remember that our common ancestor was already highly constrained. Incredibly similar biochemistry. Bilaterals. Same strategy for being multicellular at all. General developmental patterns and mechanisms.
Aliens would share none of that with us. Look at the myriad precambrian body forms and then think about how every single one of them would've shared like 80%+ of the DNA we have. Aliens would share none of it.
So much of all of that is contingent on historical "accidents", just like hiccups are a behavior resulting from our fish ancestry that no longer applies or how mammals' urethra + penis is moved around during development makes penis-havers' lower abdomens more prone to hernias or how we're basically a big connected tube from mouth to anus going back to our ancestry as worms.
If you went back and replayed Earth's own life history and jostled some of the "accidents" it would go wildly differently. Different body plans winning out, different mass extinctions creating different opportunities for radiations of minority clades. Birds and mammals only exist in their currently recognizable forms and diversity because the most recent global mass extinction killed off the dinosaurs and a similar story applies to every global mass extinction. Imagine the conditions going in a different order.
Now look to aliens. Imagine they come from an environment where oxygen could be available because the chemistry of Earth's photosynthesis was not favorable. No mass extinction due to the rise of oxygen in the atmosphere, no oxygen-breathing animals. Who knows what they'd look like or how they'd form multicellularity or if they'd even be cells. We have no base of reference: our planet's life is the only example we know of. In fact, we might even be alone.
It doesn't matter because they suck
I was abducted by aliens when I was younger. I asked them to give me a bigger hog but they just laughed and implanted a device in my skin that turned me gay. I've been on the search for aliens since then, if they can turn me gay, they can turn me straight
I bet they're just funny little guys. Silly little guys. Funny silly little guys. With silly funny hats.
They're all just like Neelix vibin' you know?
They look like Al Pachino in 1994. All of them. Everywhere. We're the only people in the whole universe that don't.
They would look like the dudes from district 9 or something idk
I think aliens look like big tanks of piss and they're gonna be real freaked out by how we just flush that stuff down toilets
If aliens exist and are holding out on advanced gender transition technologies they're assholes.
Man, it would be so fucking awesome if they gave us that tech.
I've always suspected that they wouldn't be bipedal because our whole design sucks. Our spines are bulshit and we have to wipe our own asses and we can't regrow limbs. I hope to one day see based crab people descend from the stars
Fish. I think they look like fish and live under the ocean of their home planet