So I've seen a load of polls asking about favourite Red Rangers, Blue Rangers, Pink, Yellow, male and female Rangers; all that stuff, but funnily I don't see many regarding the sixth Rangers. That may be because I don't look too hard, but still.
For those unaware (and if you are, why are you on this page?), each Power Ranger series starts with a set number of Rangers, usually five, although on several occasions there have only been three to start off with. At some point later in the season, they will acquire at least one new member of the team. Usually this will be the sixth Ranger, although there have been many series that end with more or less Rangers than the standard six. For that reason, I have chosen to include any Ranger who was not a part of the original team, joining later on in the series.
As an extra note, I have not seen all of Samurai, or any of Super Samurai, Megaforce and Operation Overdrive, so if I have not included their Rangers and you are outraged by this, take comfort in the knowledge that I have little knowledge of these characters.