Commparison: Signalman vs. Blue Sentorion

Signalman                                                     Blue Sentorion

Was always considered a ranger. Wasn't considered a ranger until Power Rangers J.O.M.T.

Never died, or appeared in ToQger. Died in Power Rangers Train Quote Generation (TQG).

Only appeared in Carranger and Megaranger. Appeared in four Power Rangers Seasons.

Was from the present day. Was from the year 2000.

You always know he's a dekaranger. Wasn't revealed til 2005 when you find out he's from SPD.