trio involving ISTP

personalities according to PDb at the time of writing

One Piece
"Monster Trio"
Monkey D. Luffy (ESFP) - Roronoa Zoro (ISTP) - Sanji (ENFJ)


"Cross Guild leaders"
Crocodile (ENTJ) - Mihawk (ISTP) - Buggy (ESTJ)


Mihawk (ISTP) - Roronoa Zoro (ISTP) - Perona (ISFP)

Roger Pirates trio
Gol D. Roger (ENTP) - Silvers Rayleigh (ISTP) - Scopper Gaban (ESTP)

Dr.Stone
Senku (INTP) - Kohaku (ISTP) - Chrome (ENFP)


"Spartan Crafts Club"
Senku (INTP) - Kaseki (ISTP) - Chrome (ENFP)


"Moon Mission team"
Senku (INTP) - Kohaku (ISTP) - Stanlee (ISTP)


Kengan Ashura
Tokita Ohma (ISTP) - Yamashita Kazuo (ISFJ) - Akiyama Kaede (ISTJ)