So far there are 3 Legendary Pokemon in the Pokemon Universe that has a Primal form: Kyogre, Groudon, and Dialga in Pokemon Dungeon. And Game Freak wouldn't just have Primal forms for Legendaries just one/two game(s). I was thinking that Primal Dialga can be an actual Pokemon we can use in battle. If Dialga has one then Palkia must have one too since they're opposite to each other.

Entei should have one and it should look like the artwork from the third Pokemon movie. 

 

Also, I think that the Regis should get a Primal form because I think they look kinda basic,kinda bland.

Arceus would look cool in a Primal Form...hmm, I wonder how Deoxys would look like, or maybe Darkrai!?

Primal Rayquaza

 

It won't make sense to only give Groudon and Kyogre a primal mega evolution without giving Rayquaza the same treatment

All of the major ones pretty much that way you can separate the big dogs from the small frys

Primal Dialga isn't the same as Primal Kyogre and Primal Groudon.

In the Japanese version it is called "Dark Dialga" but they decided against using "Dark" in the English version since they don't want to relate it to the "Dark" Type. In Japan, the "Dark" Type is called the "Evil" Type instead, so that is why it wasn't a problem in Japan but in the English version it was.

 

But if its any Pokémon I think that should get Primal, it is the Creation Trio. They scream "ancient" to me.

I just don't think it would be made because people will be confused between Primal Dialga in Mystery Doungeon and the actual Primal Dialga, unless they call it something else (Origin Form?).

Anyways, I would like all fossil Pokémon to get Primal Forms and lose their "Rock" Typing. I was hoping Mega Evolutions was the answer to that but sadly it wasn't (Areodactyl could've been Dragon/Flying).

 

I think for now Primal Form is just going to be strictly related to Kyogre, Groudon and eventually Rayquaza, unless they decide to change it in the future.

Rayquaza! The awesome dragon needs a primal form! I don't think Latios and Latias are getting primal forms due to how they secretly have the power to Mega Evolve. I would also like to see a primal or mega Suicune, due to how Suicune was my only favorite Pokemon of all time until Oshawott and Chespin showed up

I think a Primal Mew could be cool. Mew has always been my favorite legendary though, so maybe I'm just biased.

Looks like someone working at the translations area has some explaining to do. This is why sometimes I wish they didn't change stuff like this. Of course, it's unexpected at the time, but now people think Primal Dialga is the same thing as the RS mascots.

 

Primal Dialga is a currupted Pokemon due to the collapsing Temporal Tower. It goes berserk and is, well evil.

Yeah, I know, it's not really like the Primal legendaries in the actual main games. It'd still be a nice reference, though.

Rayquaza will surely have one, to not be left out, and if another legendary has a Primal form, it should be Arceus. The Pokedex(in Diamond) mentions that he created the world with his 1,000 arms, so during the millenias, he has seen a transformation to a more "simpler" form as Kyogre and Groudon has, and so he there should be some way to "reactivate" it, even if what we see in the game, is a magical aura that begins to spread out of the ring that Arceus has around his body.