Quoted By:
>TQ
I think Ingo likes to downplay his birthday, at least moreso compared to Emmet. He would get flustered if people go out of their way for him on his birthday. (I'm willing to bet the station depots make a big deal of it, decorating the station up and throwing a big party after the day is done.) I'm sure he would love a celebratory battle though.
As for what I'd get him, probably some useful battle items or some fancy Pokeballs for his team. And I'd cook him a nice meal. And I'd ride him until his engine gives out.