Okay, just for the fun of it...
How about...
Frattus Never Graduatis - The member who's been there so long, his pledge bros come back (years later) to see him at Homecoming
OR
Sororus/Frattus Smartus Everus (i.e.
Sororus/Frattus Organized Scholarus ) - The one member who no matter how many activities/events you have during the week always manages to attend ALL of them, make time to study, have a social life, and still graduate with a 4.0!
(I swear, true story...)