Also known as
- English
- Megaman X - The Day of Sigma
- Romaji
- Irregular Hunter X: The Day of Sigma
- Japanese
- イレギュラーハンターＸ
- Synonyms
- Irregular Hunter XMega Man Maverick Hunter X: The Day of SigmaMega Man X - The Day of SigmaMegaMan Maverick Hunter X: The Day of SigmaMegaman X - The Day of Sigma