Within the admin users page there are internal service accounts listed that are auto-created to be able to use Team tokens, Webhooks and API.
The naming convention of the accounts resembles the following:
These accounts are tied to tokens & VCS providers. They are created when a token is generated for a team or a VCS connection is created.
It is not recommended to remove these accounts as this action may cause a compromise to the functionality of the VCS connections and/or impact the organization and workspace.
Here is an association breakdown of those accounts:
User accounts associated with it's organization api-org-<organization-name>@hashicorp.com User accounts associated with team tokens api-<team-name>@hashicorp.com
User accounts associated with webhooks gl-webhooks-code-<organization-name>@hashicorp.com
For additional assistance please contact HashiCorp Support to request additional assistance.