Danny Phantom/SGA Crossover: 1/2!Ghost!19!John meets 18!Genius!Rodney; McShep.
Maximum Ride/SGA; Gen or Slash McShep w/ Winged!Rodney & Winged!John) Senario 1: Avian-Human Hybrids were created by the Ancients & anyone with the ATA gene, artifical or real, has that DNA hard-wired in it. The DNA 'turns on' for some reason & every gene carrier starts transforming/growing wings. Erasers (wolf-Human Hybrids) were/are created by the Genii(or Wraiths) to combat them. Senario 2: SGA characters set in 'Maximum Ride' world. Erasers could be as shown in book, or Wraiths may be used.