SELECT
accounts.id,
accounts.username,
accounts.`password`,
accounts.`status`,
accounts.formname,
accounts.email,
accounts.last_login,
accounts.last_logout,
accounts.warn_level,
accounts.ban_until,
avatar_data.first_name
FROM
accounts
Inner Join avatar_info ON accounts.id = avatar_info.account_id
Inner Join avatar_data ON avatar_info.avatar_id = avatar_data.avatar_id
WHERE
accounts.username =  'robertdavis'
OR
accounts.username = 'davidandrew'
OR
accounts.username= 'flinx'