Unproduced: Star Brigade Shockwave and Thrasher
Pictured above are two 1995 additions to the Star Brigade line - Shockwave and Thrasher. Shockwave would have been dubbed "The Human Gun", while Thrasher (note that the prototype's leg has broken) would have been his alien companion.
Apparently this Thrasher had nothing to do with the 1986 Dreadnok of the same name.
The prototype Thrasher was made using the Toy Biz action figure Forearm from the Marvel X-Force toy line, available in 1992. Because of the use of this non-Hasbro toy for this prototype, it is likely that Thrasher was just a design concept figure, and not meant to be produced exactly as is.
Shockwave/Thrasher image courtesy of: Simon Hurley
Forearm from the collection from: Anonymous