What i mean by a monstrous champion is a champion that lack any sort of human feature.
Like 
Semi monster 
Close
The top row listed is the perfect example. That's 7/148 champions. We need more monsters man!
aswell
(may have been human once, but they have no human features)
(blob of goo)
(literally an armadillo)
(just a legless shadow)
(completely non-anthropomorphic cat)
are all first order monsters by your definition
also, I feel like this list should include the following champs, which, although humanoid, are definitely monstrous: 
I feel like I've seen this thread 50 times in the past 3 days on both boards and Reddit
Nothing surprising. Humanoids are more attractive to, well, humans. We usually want to play something that at least somehow resembles either us, or people that we like. It might be a pretty lady, sexy guy, or someone that resonates with our own traits.
I love my monsters, and I especially love playing as them, not playing against them unless I'm also a monster. Love me those Godzilla vs (?) battles.
When have i said that i don't like them? I love non-human creatures. I was just explaining why Riot doesn't make much of them, and why players aren't bothered by this.
I mean, i play the 'Nids. Just search them up on google.
Oh, my apologies. http://www.spoon-tamago.com/wp-content/uploads/2019/03/toho-kaiju-appologizing-2.jpg
Riot has actually commented on this in the past. Monstrous champs are less popular, presumably not because they are less attractive, per se, but because they are harder to relate to.
It's just easier, as a human, to understand the empathize with other humans (or at least humanoids). I don't remember exactly what they said about it all, but that was the gist of it from my recollection.
For what it's worth, I agree with you. But, you know, players vote with their feet and wallets. Monster champs just... aren't as popular. sad trombone noises
Ahem ahem...
The number of humans in LoL is actually quite small (of all 149 champs). There's a multitude of races - which come in all shape and sizes. Some facial feature may bare a resemblance - but if those races existed in real life - some humans would label them as monsters.
Nightmarish creatures - are not lacking in LoL either. They're fairly balanced - adding to LoL's diversity.
Don't a lot of people like Pokemon, Godzilla, Digimon, Yokai, etc.? Monster champions should be marketable. Is it because monster champions look cool by default so people don't buy skins for them? xD Although, I do have the mecha Kha'Zix skin..Kog'maw also has a ton of skins so idk. I draw my own monsters all the time. It would be awesome to draw LoL monsters. I find Skarner, Kha'Zix, and Rek'sai very cool, but they're all junglers and I don't like jungle that much. And yes, I guess they're monster bugs....monster bugs are cool. I think LoL is missing out not making more monster champions. I think the reason they're not making that many monster champions is because they want to make them so unique and its hard to do that with so many champions.
They are pretty cool, but sadly they don't sell. I don't think the desingn is the problem, but their kits. Most of them are outdated, really weak or have no mobility.
LIST OF PRETTY GIRL CHAMPIONS
LIST OF NO
LIST OF "BRIDGE" CHAMPIONS
LIST OF MONSTER CHAMPIONS
(Do Robots count? Who knows.
If you count "Pretty Girls" as the metric, league is doing better on the monster side, granted that shouldn't be the metric for character design unless your intended audience is like 12
MORE MONSTERS!
RIOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOT
...
Agreed as heck
We still lack any vampires in league of legends, a bloodmage doesnt count.
the last few Monstrous champs:
in 2017
in 2016
in 2015
in 2014
(out of these only Ornn is truly fun to play, the rest have seriously niche/lackluster kits)
If they made a monstrous champ with an enjoyable kit maybe they wouldn't be so unpopular.
So we used to get one atleast once a year, but i guess shitting out horribly unbalanced weeb champs is alot more profitable.
ParX'zi is going to be a great addition to the monster champion collection.
