The Like A Dragon series aka Yakuza series has a long-running system for summoning help in the form of Poundmates. This Like A Dragon: Infinite Wealth guide is a listing of each one of these nineteen Poundmates, as well as their skills, costs, and unlock requirements.
The system first unlocks in Chapter 3, in the form of the Poundmates app, and costs money to invoke each summon. The money, in turn, will be put towards enhancing any given Poundmate with new abilities.
Charlie
Daredevil Delivery Boy
Substory 3: Crazy Money
Honolulu – Aloha Beach, Aloha Street
Skill: The Gig Is Up
Summon Cost: $100
With Benefits: $1,100. Add about 150 damage and 150 HP recovery or so.
Chitose Buster Holmes
Poundmate Princess
Substory 4: Busted
Honolulu – Unmissable
Skill: Gauntlet Rush
Summon Cost: $100
With Benefits: $1,100. Increases damage to enemy by about 250.
Nancy & Olivia
Crustacean Combination
Substory 10: Coming Out Of Her Shell
Honolulu – East Aloha Beach
Skill: Pincer Pandemonium
Summon Cost: $2,000
With Benefits: $12,000. Increases damage to enemy by about 1500.
Kazami Evolution
Stormy Showman
Substory 13: Rock And Roll
Honolulu – East Aloha Beach
Skill: Temptuous Tempest
Summon Cost: $2,000
With Benefits: $12,000
Nathan
Chanbara Champion
Substory 15: Samurai May We Walk Together?
Honolulu – West Aloha Beach
Skill: Path of the Warrior
Summon Cost: $100
With Benefits: $1,100
Mameoka
Gatling Gun Of Guffaws
Substory 22: Rise and Grind
Honolulu – Anaconda – Cafe Soramame
Skill: Espresso Express
Summon Cost: $100
With Benefits: $1,100
Susumu Gondawara
Man Baby Patriarch
Substory 24: Let It Snow
Honolulu – Aloha Street
Skill: Big Baby Blues
Summon Cost: $100
With Benefits: $1,100
Bony Kashiwa
Auteur Of Authenticity
Substory 27: The Pursuit Of Realism
Honolulu – Anaconda – Riverside Walk
Skill: Stunkiller Salvo
Summon Cost: $100
With Benefits: $1,100
Sojimaru Flying Beta Max
Unidentified Flying Vacuum
Substory 30: Close Encounters Of The Bird Kind
Honolulu – West Waikiki
Skill: Doomsday Drop
Summon Cost: $2,000
With Benefits: $12,000
Asakura
Street Fighting Sensation
Substory 46: A Man Facing The Future
Skill: Urban Hospitality
Summon Cost: $25,000
With Benefits: $125,000
Revolve Bartender
The Baritone Bullet
Work on your relationship with the Bartender at Revolve by performing karaoke.
Skill: Eviscerating Enka
Summon Cost: $25,000
With Benefits: $125,000
Survive
Honest Living Maestro
Memoir #35
Skill: Crooked Cooking
Summon Cost: $25,000
With Benefits: $125,000
Shun Akiyama
Sky Finance CEO
Life Link: Episode 7
Skill: Millionaire Strike
Summon Cost: $25,000
With Benefits: $125,000
Pocket Circuit Fighter
Miniature Car Superstar
Memoir #35 Memories of Pocket Circuit.
Skill: Pocket Surfing
Summon Cost: $100
With Benefits: $1,100
Sotaro Komaki
Martial Arts Master
Memoir #38 Memories of Komaki.
Skill: Komaki Finisher: Gate
Summon Cost: $2,000
With Benefits: $12,000
Yuki & Koyuki
Legendary Hostess Duo
Memoir #40 Memories of Four Shine.
Skill: Four Shine Fever
Summon Cost: $2,000
With Benefits: $12,000
Kazuki & Yuya
Stardust Icons
Memoir #44 Memories.
Skill: Alluring Toast
Summon Cost: $2,000
With Benefits: $12,000
Kaoru Sayama
The Yakuza Huntress
Life Link: Episode 6
Memoir #47 Memories of Sayama.
Skill: Yakuza Crackdown
Summon Cost: $25,000
With Benefits: $125,000
Makoto Date
No-Bullshit Detective
Kiryu’s Life Link Episodes completion.
Skill: Do Or Dive
Summon Cost: $25,000
With Benefits: $125,000
Those are all 19 Poundmates to be found in Like A Dragon Infinite Wealth.