What pokémon NEEDS a mega evolution?

Johto starters desperately need a Mega of some sort. I'm surprised they haven't so far. There are some other Johto Pokemon that need a mega, too:

- Ursaring:
- Donphan, maybe?
- Skarmory, perhaps. Would be really interesting to see it with a Mega of some sort!
- Crobat would be a really interesting pick, too.

Butterfree imo. Beedrill managed to get one, so I don't see why Butterfree, despite being slightly less underused, couldn't get one.

Otherwise....Dunsparce, Carnivine, Mr. Mime, Jynx come to mind. Those four are so unloved it makes me sad haha.

Mega Chatot is also a very interesting idea =)

Lots of candidates here. All of the Johto and Sinnoh starters for sure. Then there are mons like Frolass, Nidoking, and Electivire. Pokemon i would want a mega for but don't necessarily need it include Dragonite, Snorlax, and Machamp to name a few.

Delibird and probably Lapras. They're the only ones I could think of.
They both seem like they could do so much more, or could be extended somehow.

I would like to use a dragon mega Arbok!

No Pokémon needs it. The more can be saved from it, the better.

Rhyperior.

It has a great BST with Solid Rock as one of it's Abilities. However, it is held back by two 4x weaknesses to Water and Grass-type attacks and a terrible Sp. Def stat.

If it were to Mega Evolve, I would see it becoming a Ground/Steel-type. The Filter Ability would complement it's defensive prowess well.

It may be bothersome to lose the Fire resistance at times, but it's better than having two 4x weaknesses.

Lanturn. It has a great type combination and movepool, but subpar stats.

I think the likes of Mega Blaziken, Rayquaza, Mewtwo X/Y, Charizard X/Y, Primal Groudon/Kyogre, Ash-Greninja all need Megas on top of their current mega state, as they are very weak now

Zangoose!

And I really like Angie's suggestions too :D Donphan and Skarmory and Ursaring with a type change could be really cool.

I think Johto starters really need Mega Evolution now, and I hope all the starters get Mega Evolution in the end.

All starters that don't already have one: Johto, Sinnoh, Unova, Chestnaught/Delphox for Kalos and Alola. As for specific Mega's, once you start giving Mega's to so many Pokemon, the allure or uniqueness of Mega's loses its touch. However... if I had to pick a few Pokemon:

Dragonite
Kingdra
Lapras
Machamp
Butterfree <- agree 100% with Janna on this
Arcanine
Muk or Venomoth

Dunsprance either needs a mega or evolution

I dunno how much this Pokemon NEEDS a mega evolution, but I would love if Chimecho got one

Dare I say Dunsparce or at least an evolution

Flygon. Flygon. Flygon. Flygon. Flygon. FLYGON.

Where's my Ground/Bug Sand Streamer. Where. Is. It.

Others:
Butterfree (+1)
Drapion
Dusknoir
Palossand (simply because I want to see it go pile of sand > sandcastle > sand-made hagia sophia)
Fearow

Requests because other part of the duo has a mega:
Slowking
Froslass
Milotic

Meganium
Typhlosion
Feraligatr
Machamp
Skarmory
Ludicolo
Shiftry
Walrein
Froslass
Honchkrow
Scrafty
Scolipede
Cofagrigus
Chandelure
Hawlucha
Heliolisk

I could go on and on. Perhaps Pokémon that just need that slight push competitively.
EDIT: Despite editing multiple times. Cofagrigus' spelling won't change.