factions with ISTPs (gacha)

according to PDb at the time of writing

Arknight Endfield

Endfield Industries

• INTP Endministrator (main character)
• INFJ Perlica
• ENFP Chen Qianyu
• Operations Team Z7
• ENFJ Akekuri
• INTJ Antal
• ISTJ Catcher
• INTP Estella
• ESTP Fluorite
• ENFP Yvonne
• ENFP Tata
• INFP Andre
• INTP Qin Jiangchi
• Former Members:
• ISTP Lycia

Rhodes Island

• ESTP Laevatain
• Laevatain´s former ego ISTP Surtr
• ISFJ Ardelia
• ENFP Gilberta
• ISTJ Pogranichnik
• ESFJ Snowshine

Landbreakers/The Pack

• ISTP Wulfgard
• ISFP Rossi

United Workers' Syndicates of Talos-II

• ISTP Alesh

Zenless Zone Zero

 Victoria Housekeeping Co.

• ISTP Ellen Joe
• INFJ Alexandrina Sebastiane
• INFP Corin Wickes
• ISTJ Von Lycaon

Sons of Calydon

• ISTP Lighter
• ISTP Piper Wheel
• ENFP Burnice White
• ENFJ Caesar King
• ESTJ Luciana de Montefio
• ISFP Pulchra Fellini
• Former Members 
• ENFP Billy Kid

Stars of Lyra

• ISTP/ISTJ Evelyn Chevalier
• ENFJ Astra Yao

Spook Shack

• ISTP Komano Manato
• ISFJ Alice Thymefield
• ENFP Lucia Elowen
• ENTP Ukinami Yuzuha
• INFJ Yidhari Murphy

Wuthering Waves

main character ISTP Rover

Hoyoverse/Honkai: Star Rail

The Xianzhou Yaoqing

• ISTP Moze
• ESTP Feixiao 
• ENFJ Jiaoqiu
• ESFP Sushang

Penacony

• ISTP Gallagher 
• ISFJ Misha
• INFP Robin 
• INFJ Sunday
  

Amphoreus

• ISTP Mydei
• ISTP Thanatos
• ESTJ Aglaea
• INTP Anaxa 
• INFP Castorice 
• ENTJ Cerydra 
• ENTP Cipher
• ENFJ Cyrene 
• ISTJ Dan Heng • Permansor Terrae 
• INFJ Evernight
• ESFJ Hyacine 
• ISFJ Hysilens Phaino
• ESFJ Tribbie 

The Xianzhou Luofu /Ten-Lords Commission

• ISTP Xueyi — Luofu Detention Division Judge
• INTJ Hanya — Luofu Interrogation Division Judge
• INFP Huohuo — Luofu Trainee Judge

Hoyoverse/Genshin Impact

main character: ISTP Traveler

crossover ISTP Aloy

Champion Duelist

• ISTP Clorinde

Scions of the Canopy

• ISTP Kinich
• ENTJ Mavuika

Children of Echoes

• ISTP Xilonen
• INFP Kachina

Flower-Feather Clan

• ISTP/ESTP Chasca 
• ENFJ Ifa

Temple of Silence

• ISTP Cyno (de jure leader, vessel of Hermanubis)
• ESTP Sethos (appointed leader)

House of the Hearth

• ISTP Lynette
• INTJ Arlecchino
• INFP Freminet
• ENTP Lyney
  

Church of Favonius

• ISTP Rosaria
• ENTP Dahlia
• ESFJ Barbara

Adeptus

• ISTP/ISTJ Shenhe
• ISTJ Zhongli
• ESTJ Xianyun
• ISFJ Ganyu 
• ISTJ Xiao
• INFP Qiqi
• ESTJ Yanfei
• ESFJ Yaoyao