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My brother wants to play a character with multiple personalities but we're unsure how to actually go about switching which personality is in control.

The system he currently has is this:

Every 1d6 hours, do a Wisdom check for the inactive personality, and a Wisdom save for active personality. If active personality fails save, inactive personality becomes the active personality.

I'm under the impression that there is probably a different save/check that would be better for this, but I can't think of what it might be.

The DM already knows about this character concept and has given the OK to do it.

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  • \$\begingroup\$ Welcome to RPG.SE! Take the tour if you haven't already, and check out the help center for more guidance. \$\endgroup\$
    – Ruse
    Mar 17, 2019 at 9:20
  • \$\begingroup\$ This may be of interest to your GM and brother: Roleplaying a multiple personality character? \$\endgroup\$
    – Ruse
    Mar 17, 2019 at 9:25
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    \$\begingroup\$ When the personality changes, does anything else change along with it? For example mental stats, class features, or skill proficiencies, etc. Also, could you elaborate what you mean by "better"? The answers so far have assumed that "better" means "most similar to other uses of the same saves", but it could mean other things, for example "most likely to result in a successful save". \$\endgroup\$
    – Ruse
    Mar 17, 2019 at 9:32

2 Answers 2

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General rule of thumb for saving throws, From the DMG pg. 238

Saving Throws

Strength: Opposing a force that would physically move or bind you

Dexterity: Dodging out of harm's way

Constitution: Enduring a disease, poison or other hazard that saps vitality

Intelligence: Disbelieving certain illusions and resisting mental assaults that can be refuted with logic, sharp memory, or both

Wisdom: Resisting effects that charm, frighten, or otherwise assault your willpower

Charisma: Withstanding effects, such as possession, that would subsume your personality or hurl you to another plane of existence

You seem to be describing an effect similar to possession or the subsumption of personality, and as such I would suggest Charisma saves as being the most relevant check/save.

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  • \$\begingroup\$ Welcome to RPG.SE! Take the tour if you haven't already, and check out the help center for more guidance. \$\endgroup\$
    – V2Blast
    Mar 17, 2019 at 9:34
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Charisma would be better choice I think. It is generally the save used vs. possession and generally for effects that stop a character being itself.

Changing every 1d6 hours could be a problem as that means it will occur during sleep time. One alternative to consider - whenever the character is faced with a situation and an inactive personality thinks it could do a better job, have a contested charisma check to see if it can take over.

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  • \$\begingroup\$ That does seem good, but I'll hold out on accepting it so that others can give an answer \$\endgroup\$ Mar 17, 2019 at 8:49

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