Appears to be fine, it's probably the one you can find in Sapphire and Emerald. Finally trying my hand in this since I suck at remembering all these hack-rules and I need to get better .Pokemon Species: Latias
OT: Can't replicate the characters, it's japanese
OT Gender: n/a
EV's: (if known) None
IV's: (if known) 13 / 13 / 12 / 12 / 7 / 11
Characteristic: Scatters things often
Moves: Mist Ball, Dragon Pulse, Ice Beam, Psycho Shift
Level Caught at: Unknown
Current Level: 50
Location Caught: Traveled across both space and time from the Hoenn Region.
Pokeball Caught In: Master Ball.
Any other notes?: Has 3 ribbons. Sinnoh Champion Ribbon, Champion Ribbon, and Gorgeous Ribbon. Don't know if this can just indicate that it was used.
This.Try the tradeback/mod first. If they won't trade back, (And I'd ask a mod to make sure that source is true, though I'm sure it is), then go to a mod and get them black listed.