Quick answer: For most FireRed playthroughs, Omastar (Helix Fossil) is the more straightforward pick — its stats and movepool line up cleanly, and Surf plus a TM Ice Beam or Blizzard give it real coverage through straightforward HM/TM options, without relying on post-game Move Tutors. Kabutops (Dome Fossil) is still very viable, especially if you want more Speed and are ...