How Do You Come Up With Unique Names for Characters or Usernames?

This might be a bit off topic, but I’m curious how others approach naming things.

Whether it’s:

a VR avatar
a gaming character
a username
or even a fictional character for a story

Coming up with a unique name can be surprisingly difficult. Sometimes names feel too generic, and other times they don’t match the personality or vibe you’re going for.

I usually think about:

• the theme or world the character belongs to
  whether the name should sound strong, mysterious, or simple
  and how memorable it feels after hearing it once

I’m curious:

• Do you have a process for creating names?
  Do you reuse names across platforms or keep them unique?
  What makes a name “feel right” to you?

Would love to hear how others think about this.