A non-transforming robot action figure, Axer does have hints of an alternate mode to his design, possibly some form of off-road car. He came with the Turbo Cycle, an off-road motorbike with sidecar that can transform into a gun emplacement. The sidecar has a flip-down panel so another Action Master figure can stand on it.
Part of a Wal-Mart exclusive 2-pack, Robots in Disguise Axer is a redeco of Generation 2Laser CycleRoad Pig, transforming into a Harley-Davidson Electra Glide motorcycle. His tailpipe has an LED that lights it up, becoming an arm-mounted weapon in robot mode. This mold is slightly different from the original, using the new-mold handlebars that were made for the Laser Cycles' Japanese Microman release.
Axer was the first Transformers character to cross over physically from one continuity family to another.
The 1990 Transformers catalogue calls Axer's vehicle the "Off-Road Cycle". The Axer figure shown also has different coloring from the final version, but then again, so do most of the Action Master toys shown there.
Axor, having the same colours and similar name, from the Search For the Decepticons online game, is most likely a rivival of Axer.