Well, Blaze and/or Silver never appear in Sonic X. Mostly because the mostrar was made before 2005, and 2006 when Blaze and Silver were first introduced to the Sonic games. I think the mostrar was started around the 90's.
i wish Silver and Blaze come to a new season of SONICX and they should also have SONIA and MANIC!!!! That would be awesome!!!!! But they didn't come!!!! :(