Secret Egg event! - Toys'R'Us

Ah, is that their appeal then?

Basically. All three Pokemon, Iris' Axew, Dent/Cilan's Pansage, and Ash's Pidove, have 31 IVs in Attack, Sp. Attack, and Speed.

Axew is arguably the best of the three in terms of usefulness for breeding, because it's always Male, and combined with its 31 IVs in Attack and Speed, you can pass on moves as well as decent stats.