Gargoyle, the Statue Pokémon
R/B: Pokédex Entry: Due to countless hours of training, it was able to hone its skill to perfect the foolproof punch.
Yellow Pokédex Entry: Thanks to its devoted training, it unleashes a blinding punch capable of overcoming an adversary in a single attack.
Stadium Pokédex Entry: It takes to the skies, delivering a single punch to defeat enemies before they have realized.
Game Location: Cerulean Cave after Mewtwo encounter
Height: 4'11"
Weight: 304.2 lbs
Egg Group: Human-like/Dragon
Learnset
By leveling up
Level 1 - Karate Chop
Level 10 - Quick Attack
Level 10 - Leer
Level 12 - Defense Curl
Level 20 - Harden
Level 20 - Gust
Level 25 - Wing Attack
Level 30 - Slam
Level 34 - Comet Punch
Level 36 - Focus Energy
Level 42 - Hurry Hit [Signature Move. Fighting. 50 BP. 30pp(48 Max). 100% Accuracy. Priority: +1.
Level 46 - Dizzy Punch
By TM/HM
TM01 - Mega Punch
TM02 - Razor Wind
TM04 - Whirlwind
TM05 - Mega Kick
TM06 - Toxic
TM08 - Body Slam
TM09 - Take Down
TM10 - Double-Edge
TM15 - Hyper Beam
TM17 - Submission
TM26 - Earthquake
TM27 - Fissure
TM28 - Dig
TM31 - Mimic
TM32 - Double Team
TM34 - Bide
TM35 - Metronome
TM38 - Fire Blast
TM43 - Sky Attack
TM44 - Rest
TM48 - Rock Slide
TM50 - Substitute
HM02 - Fly
HM04 - Strength
By transfer from another generation
Dragon Rage
Fire Punch
Fire Spin
Flamethrower
Headbutt
Ice Punch
Meditate
Reflect
Screech
Thrash
Thunderpunch
Edit: I've made some changes due to this no longer being a Machamp line split evo. eshe0's submission post didn't include Counter (which seemed to be a significant move from the discord discussion) & Seismic Toss so I have removed both from the submission. If either is considered not competitive then I would include it.