A Union Flag pilot who is assigned to the elite anti-Gundam unit known as the Over Flags. He has a past history with Over Flags commander Graham Aker, and the two pilots have a strong sense of rivalry. Joshua is a very brash and overconfident man as Joshua is a pilot with a huge ego. He thinks he can capture a Gundam by himself.
As a Union soldier, Joshua is skilled in combat tactics, use of various firearms, military martial arts, and MS piloting. He can also perform"Graham Special" in the mid-air.
Joshua is an Over Flag pilot who first appears when the Union is preparing to conduct a joint operation with the AEU and HRL against Celestial Being. Although Graham is superior than him, Joshua holds a high level of contempt for him and vows to prove himself by capturing one of the Gundams. During the battle, Joshua impulsively replicates a mid-air transformation, a maneuver which has come to be known as the "Graham Special". He closes in on Lockon Stratos in Gundam Dynames, but Lockon easily kills Joshua with his GN Beam Pistol.
Joshua seems have a unrespect attitude to Graham,he thinks he is the real ace but not Graham.Although Graham is superior than him, Joshua holds a high level of contempt for him and vows to prove himself by capturing one of the Gundams.
Joshua's personality resembles ace of AEU,Patrick Colasour,although it is a bit different from Patrick.
His death was because he disobey orders and lead to his demise.