Well first it'd have to know your character's proper name, else it's extremely unlikely to the point of being statistically impossible that an angel or demon would be summoning a creature of <base race>. So given a 3rd or 4th level character, they'll need to have done something to warrant that kind of attention, else you're just railroading. If your players are fine with that, then more power to you, but I'd say that something out of the blue like that would irk me.