The Investigation Team is a group dedicated to investigating the phenomena of the Midnight Channel and stopping the murder cases in Yasoinaba in Persona 4. The team functions somewhat similar to SEES of Persona 3, however, the Investigation Team is founded as an independent group, with no sponsors nor advisor, unlike SEES. The founding members of the Investigation Team are the protagonist, Yosuke Hanamura and Chie Satonaka, three students of Yasogami High School who've awakened their Personas.
Much like how SEES becomes the Nyx Annihilation Team, the Investigation Team eventually becomes known as The Seekers of Truth if the player chooses to continue searching for the real culprit, at which point it changes to represent the Judgement Arcana Social Link.
In Persona Q: Shadow of the Labyrinth, after combining with SEES from Persona 3, they undergo the alias "Team Yaso".
The members, arranged chronologically in the order of joining, is as follows:
- The protagonist: Founder/Field Leader
- Yosuke Hanamura: Founder
- Chie Satonaka: Founder
- Yukiko Amagi: Member
- Kanji Tatsumi: Member
- Teddie: Support/Member
- While Teddie aided the protagonist, Chie, and Yosuke even before the Investigation Team was founded, he did not join the Investigation Team until later.
The Investigation Team with Ryotaro and Nanako
Featured on the cover artwork for Persona 4 Official Design Works
Original group photo of the Investigation Team
|Persona 4 The Animation|
The Investigation Team in Persona 4 The Animation
Summer Festival end
Group Photo of Investigation Team with Nanako and Dojima
|Persona 4 Golden|
Remake group photo of Investigation Team with Marie
|Persona 4 The Golden Animation|
Group Photo with Marie after the quiz game
One of the group photos without Marie
- Naoto's theme in Persona 4 Arena, Seeker of Truth, is named after the group's Judgement Arcana Social Link of the same name.
- In Persona Q, the group is forced by Margaret into doing Jojo Bizarre Adventure poses when they come to aid SEES during their assault against the Queen of Hearts.