My immediate reaction to the subject header was “why would a 3 letter name need a nickname?”
I like CHolk, but pronounced choke.
I like Chulk… Or Hunk.
I think chulkadeus is great. mohulk is funny too. looks like most will go with chulk though.
“Crapulk” for me 
He’s the youngest hulk and also the most rotund.
I’m going with ‘Bulk’
I think I’ll go with TSJBHAMMHGAMhulk (Typical Stereotyping: Just Because He’s Asian Must Mean He’s Good At Math)
H.U.L.T.S (Hulk u like to sell)
How about TUHulk - Totally underwhelming hulk? Amadeus Chore?
Gotta say I don’t usually moan about new characters but I found him to be nigh on useless as a 4* character, I even felt 3* hulk was much much better. Hey ho he seems to be popular though so if I’m answering more in line with the actual question then Chulk seems the obvious choice.
TAHulk just finetahulk looks like ass-hat anyway
Chulk is probably the best one, I’ve voted for it. But although he’s a good character from his way to rescue souls etc. - I don’t like him. Too bizarre.
I also prefer “Cho”. But if we’re going to reference his hair, obviously he should be FauxHulk, not MoHulk.
Our group has affectionately referred to him as “Costco-Eating Hulk” in deference to the famous cheap hot dogs sold there.
I’ve seen that name floating around, and it confused the hell out of me because I had no idea Costco had any connection to hot dogs until now.
There’s only one right answer here. Dude Brolk.
Yup, we don’t need to add letters and make it less clear.
I went to CostCo just the other day. My family all had the monster hot dogs but I opted for the Bulgogi Bake. Not sure if that’s offered in US CostCo, but it’s kind of a stromboli with Korean spiced meat inside. Yum yum. This conversation is far more interesting than OP.
i actually prefer the hot dogs at Sam’s Club.. those juicy Nathan’s … you don’t even need to dress them for them to still be perfection!
I’ve been going with Thulk. Sounds better to me than Tulk or TAhulk
I actually like calling him CHalk, with an ‘a’ cuz he’s super smart and writes on chalkboards and stuff.
As for abbreviations, everyone calls She-Hulk Shulk instead of Jen, so I can understand why people don’t want to just call him Cho.