Garp is a fighting style that uses haki based attacks. It is used by Garp and can be obtained by training from Garp Trainer.
There are five requirements: 750B Beli, Clear 5 Pica Dungeons, 5000 stat in strength, Awakened human race, Have 4 cannonballs(Dropped from Garp boss with a 6% chance).
Garp trainer is located at Garp island in 3rd sea. Garp has 7 skills including combat.
The skills are: Combat: A basic punch, Meteor fist: Launches seven cannonballs at your mouse location, Sattelite fist: Spins around a massive cannonball before slamming on the ground, Fist of Love: A punch to the ground which releases heart particles, Blue hole: Launches towards the nearest enemy and grabs them after which you will slam them down with a blue explosion afterwards, Galaxy impact: Leaps in the air to do a haki infused punch dealing massive damage, Hero mode: Multiplies all damage by about 1.4x, multiplies Fighting Style damage by about 2.1x and gives 1.3x damage reduction. Garp is the 2nd best fighting style.