Which Ultra Beast is your favourite and why?

[Juliko]

I like them all, mostly, but my favorites are Celesteela (for the fairy tale its based on) and Poipole (It's just so cute and cuddly!).

 

[hanecco]

Blacephalon. It blows my mind.

 

[Serverus Snope]

Xurkitree, simply because it goes from a frightening nuker of teams to... this.

 

[colours]

Nihilego and Celesteela. The others I don't really care so much about. :< Also both purely for design reasons, although... interestingly enough I've never had either on a team before.

 

[sucreine]

Pheromosa! I just really love how they took something that’s normally seen as gross and scary like a roach, and turned it into something beautiful and charming. She’s honestly become my second favorite Pokémon cause she’s just so interesting to me and fun to work with in art/writing! A shame we won’t see more of her in action in the anime but I did really enjoy the episode she had.

 

[Parissong]

Pheromosa. It is a strong independent female bug thing that needs no Buzzwole.

 

[akumachan65]

I like Celesteela, because it looks pretty to me

 

[Rocket Zigzagoon]

For me, I like all of them, but Poipole line stands out for appearances and stats. I also like both Celesteela, Kartana and Stakataka for robot designs. (I am a fan of robots so that fits.)

 

[Phosphene]

Nagandel is to be my favorite just because of how alien and interesting it is, with Xurkitree, Stakataka, and Kartana being runner-ups.

 

[Felly]

Blacephalon has won my heart lately. I did a Showdown tourney recently with one, and it did pretty solidly that made me appreciate it more.

 

[Blazikenn]

Guzzlord, no contest

 

[Germa66]

Guzzlord because it looks creepy and cool at the same time. It also has one of the most interesting backstories out of all the Ultra Beasts.

 

[Leaf_Ranger]

Lunala is my favourite and one of the main reasons for me to buy Moon. I was sad to find out that most likely it isn't a Pkmn per se but an Ultra Beast. Nevertheless, it a skeleton vampire bat lord whose shiny version seems like it could make a cameo in Castlevania.
As for the more traditional bunch of UB and despite not liking the turn that the extraterrestrial lore has taken with them, I like Naganade because it's purple, it resembles a wasp and just seems tan updated version of a bee enemy in Sonic games that I played in my childhood. I also like Celesteela because it reminds me of a character in Okami.

 

[electrictype master]

Nihilego because it was the first one that I saw in Sun and Moon and because it looked eerie when it merged with Lusamine.

 

[charlycicero]

Poipole, because it is the only one that resembles a living thing to be honest, plus it is cute. I would imagine a party with the cutsy Mythicals, like Jirachi and Mew, and Poipole would be sort of a special guest. It fits. Now, I don't like its evolution, too weird to me.

Guzzlord is pretty cool and menacing, but it doesn't beat Poipole.