These are weapons designed like the bosses Pit encounters in Kid Icarus: Uprising. They are unlocked when Pit first defeats them.
“The Phosphora Bow is a Bow introduced in Kid Icarus: Uprising. It is a piece of Phosphora's...Phosphora Bow
“The Cragalanche Cannon is a Cannon in Kid Icarus: Uprising. It is based on Cragalanche. Despite...Cragalanche Cannon