Do I need a Neopet that has both the Fire and Water Faerie types for Blue Krawk to get its bonus?
No. You can have one Neopet with the Fire Faerie type and a different one with the Water Faerie type. If you do have one Neopet with both Faerie types, such as Rainbow Pteri, Blue Krawk still gets its bonus. Techo Adept Neopet | Experienced Techo | Light Before you roll for a contest this Neopet is in, you may have it use the stat of one of its rivals instead of its own. (The stat includes everything except Item bonuses and the die roll.