Nyx/Shadow: both are aware of the power they have and what they can be used for
 
Ticket/Alice: both feel like they’re too plain to live up to anything
 
Fluffle/Cheat: both have rather interesting lives and both are awesome
 
Niggertron/MLK Jr.: both have similar views on racism and prejudice
 
Tiara/English: both were once young rapscallions before ascending to “Elder God of Decimation”-status
 
Ataxia/Ed: both are associated with mentality-based surreality and seem to have limited control over cartoon antics (“limited” nothing, Ataxia has friggin’ Mr. Fantastic limbs!)