386K accounts from Smogon (smogon.com) were exposed in this breach. Besides email addresses, it included passwords, which makes it a high-risk breach.
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Email addressesGendersGeographic locationsPasswordsUsernamesWebsite activity
In April 2018, the Pokémon website known as Smogon announced they'd suffered a data breach. The breach dated back to September 2017 and affected their XenForo based forum. The exposed data included usernames, email addresses, genders and both bcrypt and MD5 password hashes.
Source: Have I Been Pwned (CC BY 4.0)