Sure! Here are some funny nicknames for a grumpy person:
- Grumpy McGrumpface
- Sourpuss
- Cranky Pants
- Grumpzilla
- Mr. Grouch
- Grumblebum
- Grumpy Gus
- Grinchy
- Frowny Face
- Moody McMoody
- Captain Crank
- The Grumplord
- Sir Grumpsalot
- Princess Pout
- The Moan Ranger
- Grouchy McGee
- Crabby Patty
- Captain Complainer
- Pouty Pete
- Fussbucket
- Huffy Puffy
- Sour Grapes
- The Sullen Sultan
- The Grumpster
- Woe-is-me Wanda
- Frowny Clown
- The Crabby King
- Miffed Mike
- The Grumble Guru
- Mopey Mabel
- The Kvetch King
- Grouchy Granny
- Sulky Sam
- Whiny Winnie
- The Glum Guru
- Testy Terry
- The Grumpy Guru
- Petulant Pete
- Murky Mark
- The Grumble Goblin
- Grouchy Gus
- Testy Tess
- Moody Morty
- Glum Gus
- The Sulk Sultan
- Grouch Master
- Huffy Harry
- The Sullen Sage
- Sour Steve
- Grouse Grouper
- Sullen Sally
- Whiny Willy
- Grouchy Greg
- Peeved Patty
- The Glumster
- Cranky Karen
- Grouchy George
- Moody Martha
- Crabby Carl
- The Grumpinator
- Snappy Sally
- Huffy Hank
- Glum Gary
- Grumble Guru
- Grouchy Gail
- Moody Melvin
- Crabby Cathy
- Sour Sally
- Grumpy Gail
- The Fuss Factory
- Gloomy Gus
- The Mope Master
- Peevish Paul
- Moody Mike
- The Sulk Specialist
- Crabby Chris
- Snippy Sue
- Grouchy Gill
- Grumble Gramps
- Glum Gertie
- Sulk Master
- Grouchy Gramps
- Grumpy Granny
- The Crank Commander
- The Whine Wizard
- Cranky Chris
- Glum Gloria
- Moody Max
- Sulky Sue
- The Grump Guru
- Grumble Gracie
- Moody Marnie
- Testy Tom
- The Sour Sage
- Grumpy Greg
- The Grump General
- Snarky Steve
- Grouchy Greta
- The Grump Giant
- Moody Mandy
- Grouchy Gregor
- Pouty Polly
- Sour Sylvia
- Grumpy Gavin
- Glum Gus
- Cranky Craig
- Grumbly George
- Testy Tammy
- Peeved Percy
- Moody Marvin
- Grouchy Gal
- Cranky Claire
- Grumpy Gary
- Sour Simon
- Snappy Sally
- Grumble Gus
- Peevish Pat
- The Grumpster General
- The Sulk Sorcerer
- The Glum Guru
- Grumble Gran
- Grouchy Grandpa
- Crabby Clara
- Moody Matt
- Sour Sue
- Glum Grace
- The Crank Chief
- Peevish Pam
- Sulky Simon
- Grouchy Gabby
- The Grumblemeister
- Cranky Casey
- The Grump Master
- The Sullen Scholar
- Snippy Sam
- Grouchy Gillian
- Grumpy Greg
- Crabby Carol
- Glum Geoff
- Sulky Sandra
- The Whine Whisperer
- Moody Megan
- Grumble Gary
- Sour Sally
- The Glum Giant
- Grouchy Gordon
- The Grumpy General
- The Fuss Fiend
- Testy Tim
- Snarky Sally
- Crabby Curtis
- Sulky Sylvia
- Moody Molly
- Grumble Gus
- Peevish Pete
- The Grump Grandmaster
- Grouchy Gavin
- Snappy Sam
- Cranky Chris
- Glum Greg
- The Sulk Specialist
- Grumble Gill
- Sour Steven
- Moody Mary
- The Grump Guardian
- Grouchy Grant
- Crabby Cynthia
- Glum Glenn
- Snarky Sue
- The Fuss Foreman
- Peevish Paul
- Grumpy Gail
- Cranky Carol
- The Moan Monarch
- Grouchy Gary
- The Grump Chancellor
- Glum Gilda
- Sulky Stuart
- Snappy Sally
- The Grumble Guru
- Grumpy Gloria
- Peevish Percy
- Moody Mabel
- The Sulk Sage
- Cranky Cathy
- Glum Gordon
- The Grump King
- Grouchy Gloria
- Snappy Steve
- Sour Samantha
- Grumble Gus
- Peeved Pete
- Moody Moira
- The Sullen Specialist
- Crabby Craig
- The Grump Overlord
- Glum Gareth
- Sulky Sabrina
- The Fuss Fellow
- Grouchy Gus