Gettag, in the context of Mugen, typically refers to a character designed to mimic or represent a specific entity or concept, often with humorous or satirical undertones. Without specific reference to a well-known character named Gettag in mainstream media or Mugen's official character list, it's plausible that Gettag could be a custom or fan-made character within the Mugen community.
This effectively acts as a custom GetTag command. mugen gettag