In Bengeance is Mine, Sir Morton is among the Forever Knights who fought Ben and Rook in Pakmar's Loofah Emporium. After the store got destroyed, they disappeared.
In An American Benwolf in London, Sir Morton helped Chadwick find Excalibur in London. When their lives were at risk due to a mutated Chadwick on a rampage causing a flood in the underground vault, the Forever Knights allowed a truce with Ben's group in order to find a way to escape. After escaping, Sir Morton promised Ben they would fight again another day.