hello! given that ephraim's three irms were built upon a core idea of them being an astronaut (angel), i think "Unified Concept" would be a suitable format for the irm installation!
more info can be found here but tl;dr
The Many Faces of Ephraim Ladd
“According to the Interdimensional Rumor Mill, some things never change, even across dimensions. Someone, somewhere, decided to catalog all the different versions of Ephraim Ladd in an Ephraim Registry, but today the version from IF-#60.881 is playing. Here’s what the rumors say…”
