Costello is an Administrator and owner of GBAtemp.net.
Costello discovered GBAtemp in mid-2002, when GBAtemp was still a small website. When the site turned into a forum in October 2002, Costello was the 255th member to register (255 = 0xFF = %1111 1111). He has been a member ever since and has moved up the ranks from moderator of the GBA Hardware and Utilities Forum, to Global Moderator, to Administrator in early 2005.
Costello owns or has owned the following handhelds & consoles:
- GameBoy Color
- Sega MegaDrive
- Sega Saturn
- PlayStation 2
- GameBoy Advance
- Nintendo GameCube
- Nintendo DS
- Xbox 360
- Nintendo Wii
His favourite games include:
- Metal Gear Solid 3 - Snake Eater
- The Elder Scrolls IV: Oblivion
- The Legend of Zelda: Wind Waker
- The Legend of Zelda: Oracle of Ages/Seasons
His favourite game is "Mario VS Luigi", the local WiFi multiplayer mode of New Super Mario Bros (DS).