The Comp Air 4, also known as the’Comp Monster” is one of a series of kit build aircraft produced by Aerocomp Inc of Merritt Island, Florida, which was formed in 1993 initially to build floats for seaplanes.

The Merlin, which was originally designed in Canada in 1990 by John Burch, was developed by Aerocomp Inc of Merritt Island, Florida and in recent years has been available from Blue Yonder Aviation.