Final Submission
Wharbiddon
A couple of plays on words here.
First off, reading it as one full word, it sounds a lot like "Forbidden", which is exactly what secondary moves will be when this guy comes on the field. It is also full of scars and is very warlike in its appearance, thus the prefix "Whar". The "Wha" is of course from Narwhal. "Wharbid" is also a play on "morbid", and "don" has the added effect of making it sound big and imposing.
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I think any name for this Poke should reflect on its rather aggressive look and imposing stature. It gives off the same feeling as, say the 'Kraken' from Pirates of the Caribbean. When it surfaces, you tend to go, 'ohhhhhh sh**'. As such, I really like the following names:
Collosoil - Very simple, elegant, and extremely fitting for this CAP.
Gnarwhirl - Again, a cool play on words and a fitting name for what this pokemon looks like. A gnarling thing that whirls its horn around.
Tremorgue - Another elegant one which is simple to understand and easy to say.
Cerosand - A sand creature with a single giant horn! It also sounds 'big' when u read it. By 'big' I mean this: "Mudkip" sounds tiny and cute, while "Cerosand" sound like a giant monster.
Oraboro - Cool sounding name! It sounds much nicer when read as 'oh-rah-boh-roh' versus being read as 'oh-rah-buh-roh' (which sounds closer to burrow). CAP9 has an IN YOUR FACE attitude and look, but 'burrow' instead makes it sound like a groundhog. I'm all for "oh-rah-boh-roh"!
Dauntusk - Same as with Tremorgue. Easy to say and understand. Fits well too.
Borderlines for me:
Narbrawl - It's cool, but u rarely think of a badass whale with a huge spike, 133 HP and 122 Atk as something that 'brawls'. It might 'crush' or 'bulldoze' but 'brawl' seems more fitting for something small and aggressive.
Grimmould - Another cool one, but sounds more like a fungus than a large earth whale.
Coalidon - Not bad, but for me, it doesn't fully fit the flavor.
I generally didn't like names ending in 'wal' or 'whal'. They sounded too awkward.