sockpuppet

A  sockpuppet  is a fictitious online identity (usually a pseudonym) created as a form of deception for many possible use-cases, such as inflating interesting in a topic or project, publicly providing strawman arguments that the same person can openly refute, artificially generating controversy that the actual person can then peaceably resolve, etc.

Examples

 * https://web3isgoinggreat.com/single/ian-macalinao-pseudonyms