The aircraft is supplied as plans for amateur construction with some parts and sub assemblies available.
[1][2] The name Ban-Bi combines Ban from the designer's surname, Colomban, and Bi from the French "biplace", meaning two seats.
[3] The MC-100 features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, a T-tail, fixed tricycle landing gear and a single engine in tractor configuration.
The standard engine used is the 80 hp (60 kW) Rotax 912UL four-stroke powerplant.
The cockpit is described by reviewers Roy Beisswenger and Marino Boric as "snug, but adequate"[1][2] The aircraft is built from plans.