Not so much of a swap but rather invert
I gave them new designs and personality traits based on their new inverted classpects
(For exp. rage -> hope , rogue -> page)(There are also different interpretations for whats exactly "opposite" of what so i just stuck with a source i liked)
John: Mage of Blood
Dave: Thief of Space
Jade: Seer of time
Rose: Witch of void
thats all thanks