Making a summon monster mythic
 

I checked and can't seem to find. Is there a way to make a summoned monster mythic?

Looks like the mythic simple template needs to be added to those allowed for summoned creatures. :/ I would report it as a bug.

If you're trying to add it from the summon monster encounter library, that might be where your problem lies. as standard rules don't allow for summoning of mythic monsters.

Try just adding it as a monster and then putting in the template.

There is a mythic template, but apparently it can only be added to creatures that are already built as mythic in the encounter generator -- which seems a bit redundant.

This is a bug that's already on the list. The work-around is to open configure hero, find the "Classes to Show", turn off "Summoned Creature", and then on the Classes tab, add the mythic template you want as you would any normal template. Then, re-open configure hero, and turn Summoned Creature back on, so you can add Augment Summoning, and the other summoned monster abilities you want to add.

Fantastic. That's a work-around I can work with. Thanks.