Margaret Chen
Librarian
Discovered strange symbols in ancient texts
- Key Skills
- Library Use, Language (Other), History
161 investigator ideas for solo play, pairs, small teams and larger groups, each with an occupation, key skills and a hook to start from.
These are concepts, not finished character sheets: a name, an occupation, a few key skills and a reason to get drawn into the Mythos. Build the numbers with Creating an Investigator (characteristics, occupation and personal-interest skill points, derived values), and read Sanity to see what these people are about to go through. If you want investigators with full statistics, see 56 Ready-to-Play Investigators.
The tables are sorted by group size and by how experienced the investigators are meant to be. Call of Cthulhu has no character levels: "starting out", "seasoned" and "veteran" here only describe how much skill and history you give the investigator when you build them.
Perfect for one-on-one sessions or starting investigators:
Librarian
Discovered strange symbols in ancient texts
Beat Cop
Witnessed impossible crime scene
Nurse
Patient spoke of nightmarish visions
Mechanic
Fixed car with impossible engine modifications
Journalist
Investigating disappearances in small town
Alienist
Treating patients with shared delusions
Army Officer
Led expedition that found ancient ruins
Archaeologist
Unearthed artifacts that shouldn't exist
Police Detective
Solving cases with supernatural elements
Priest
Performed exorcism that went wrong
Occult Scholar
Spent years studying forbidden knowledge
Military Intelligence
Investigated government supernatural projects
Fortune Teller
Real psychic abilities emerged during readings
Federal Investigator
Task force for unexplained phenomena
Research Scientist
Experiments opened doorways to other dimensions
Perfect partnerships for new investigators:
Pair
Studying local folklore for thesis
Pair
Both encounter same strange incidents
Pair
Strange machines appearing in town
Pair
Company books show impossible transactions
Pair
Children drawing identical nightmares
Pair
Medical examiner and detective partnership
Pair
Tracking cursed artifacts through history
Pair
Flying surveys reveal impossible geography
Pair
Federal investigation meets church secrets
Pair
Serial killer with supernatural motives
Pair
Classified supernatural warfare project
Pair
Mind control experiments gone wrong
Pair
Ancient sites with active spiritual presences
Pair
Dimensional breach containment
Pair
Cult infiltration in foreign country
Classic investigative teams for beginning players:
Group of 3
Local history project uncovers dark secrets
Group of 3
Investigating series of unexplained events
Group of 3
Strange occurrences threatening the town
Group of 4
Inheriting property with dark history
Group of 4
Patients with impossible medical conditions
Group of 3
Serial crimes with occult connections
Group of 4
Excavation of cursed burial site
Group of 4
Investigating fraudulent supernatural claims
Group of 4
Containing supernatural threats to national security
Group of 4
Tracking ancient artifacts across continents
Group of 4
High-profile cases with supernatural elements
Group of 4
Combating otherworldly incursions
Larger groups for collaborative storytelling:
Group of 6
Children reporting shared nightmares
Group of 6
Town-wide mysterious illness outbreak
Group of 6
Artifacts causing strange visitor behavior
Group of 6
Guests disappearing from specific room
Group of 6
Students conducting dangerous experiments
Group of 6
Patients arriving with impossible injuries
Group of 6
Corporate conspiracy with occult connections
Group of 6
Defending client accused of impossible crime
Group of 6
Global supernatural threat coordination
Group of 6
Protecting company from occult industrial espionage
Group of 6
Excavating multiple connected ancient sites
Group of 6
Institute experiments breaching dimensional barriers
A character's background provides motivation, connections, and story hooks. Consider these elements when developing your investigator:
| Motivation Type | Description | Story Hook |
|---|---|---|
| Curiosity | Insatiable need to understand mysteries | Can't resist investigating strange occurrences |
| Justice | Desire to protect innocents and punish wrongdoers | Pursues supernatural criminals |
| Revenge | Seeking to punish those who harmed loved ones | Tracking cult that killed family member |
| Knowledge | Academic pursuit of forbidden understanding | Willing to risk sanity for discovery |
| Duty | Professional or moral obligation | Must investigate as part of job |
| Survival | Forced into investigation by circumstances | Marked by cult and must understand why |
Effective Call of Cthulhu characters balance competence with vulnerability. They should be capable enough to investigate mysteries but human enough to be affected by what they discover.
Embrace Human Limitations: Your character is an ordinary person facing extraordinary circumstances. They should make mistakes, feel fear, and sometimes make poor decisions under stress.
Focus on Relationships: Connections to other people give your character stakes in the story. Protecting loved ones or honoring professional relationships can drive investigation forward.
Accept Consequences: Sanity loss and mental disorders aren't character flaws—they're opportunities for deeper roleplay and character growth through adversity.
| Archetype | Stereotypical Version | More Interesting Approach |
|---|---|---|
| The Scholar | Absent-minded professor who knows everything | Passionate researcher with specific expertise and blind spots |
| The Detective | Hard-boiled cop who trusts no one | Professional investigator struggling with supernatural cases |
| The Dilettante | Rich person who treats mystery as hobby | Wealthy individual using resources to help others |
| The Mystic | Wise fortune teller who sees all | Person with inexplicable abilities they don't understand |
Successful Call of Cthulhu groups balance different skill sets and personalities. Consider how your character fits with others and what unique perspective they bring to investigations.
Experienced players might explore these advanced concepts:
For more action-oriented games, Pulp Cthulhu (an optional rules variant for 7th edition, not a separate game) makes investigators tougher and more heroic. Many of the veteran concepts above suit it well.
Characters from different cultural backgrounds bring unique perspectives and knowledge to investigations, though this requires sensitive and respectful portrayal.
A good concept balances mechanical effectiveness with narrative depth. The best investigators are those who feel like real people—flawed, motivated, and human. They should be competent enough to uncover cosmic horrors but vulnerable enough that those discoveries matter.
Whether you're playing a solo investigator uncovering family secrets or part of a large team confronting world-threatening conspiracies, your character should feel authentic to the era you are playing in and to the cosmic horror genre. Use these concepts as starting points, but don't be afraid to create something uniquely yours.
Happy investigating, and may your characters survive long enough to regret what they discover!