User blog comment:BannedLagiacrus/Monster Appreciation Week: Alatreon (4th Gen)/@comment-16331478-20170304120641/@comment-17735225-20170304145404

1. Flash bomb do have limited area of effect to them despite the visual effect it gives. I learned this when trying to solo rusted kusha in 4u and after that I stopped missing most of my flash bombs. Try throwing it a little bit closer to its face.

2. It may or may not have attacks that for the duration immune to flash bomb. But normally I never fail to flash him. Try flash him after certain attack to check.

I'm sorry if I'm coming off as a smartass. Since I fought him mostly solo maybe fighting him with other players make him hard to flash?