So, we have Hulk, we have Shulk(ie), and Rulk…
So.. Cho needs an abbreviated name.
Here is what i have seen so far.
MoHulk (my favorite)
Chulk
TAHulk
ChoHulk
Hulkadeus
Cho
Any others? whats’s your favorite or recommendation.. if we get some more, we can make a poll!
Master Sausage
I’ve been writing Tulk.
For some reason I’ve been writing/saying Chulk. 
Cholk them out?
Definitely Cholk.
Teacher’s Assistant
I always saw CHulk until today.
Chulk, chulk, chulk!!! 
Guess I’m in the minority here, but Cho is perfectly fine. I’m also too lazy to add more letters than necessary.
Hmmm, he’s got attitude, he’s edgy and definately in your face. He looks like the type of dog who likes to get Biz-Zay.
For some reason Poochie comes to mind.
Pretty much this.
Enough responses to make a poll!
Why complicate matters?
There’s only 1 “Cho” in the game.
Just Cho is fine, seriously. 
I like Chulk. I don’t think we need to agree on one nickname. Use whatever you want. I like SamCap as 4* Cap’s nickname. Others like FalCap, FailCap, etc. To each their own. Already gave an upvote to Pinko McFly’s Poochie comment, but thought I’d give an extra mention, since it made me laugh. Fan of the Simpsons here, and it came out of left-field, but was applicable.
Ghulk
Everyone has their own favoured nickname. Like for me, I’ve always preferred to call the 3* and 4* Logan “Patchverine” and “Xverine”. For Amadeus, no particular preference yet, but perhaps “Hulkcho” as in his icon code
What the heck is ‘MoHulk’?
Attempted play on Mohawk…?
Def Cho … if you’re in to the whole brevity thing.
I guess so, though his hairdo isn’t actually a mohawk…so why?
I picked Cho…I like typing as little as possible, especially when on the phone
TACho…