Star Guardian Syndra/Janna Theory
A random theory that came to mind when reading the star guardian bio pages. This is mostly just speculation but hear me out. (Actually some people might have come to the same conclusion anyways but oh well.)
http://universe.leagueoflegends.com/en_US/star-guardian/janna/
http://universe.leagueoflegends.com/en_US/star-guardian/syndra/
Syndra and Janna are of the same generation of Star Guardians within their universe, and while not directly stated, are hinted at once having been on the same team, and that Syndra had something to do with its downfall. A hint or two comes from the Starfall story.
http://universe.leagueoflegends.com/en_US/story/star-guardian-starfall/
I hear Janna’s footsteps stop behind me as I walk towards the ‘girl.’ I take this as a not so subtle clue that I’m on my own. -Janna hanging back intentionally avoiding the social interaction.
_ I feel Janna’s fingertips on my arm, supporting me. I look over at Janna. Her normally calm face is grimacing at the girl behind the table. I do a double take between them before returning to the conversation. “Well, we’re all here now,” Janna says curtly._ -Hints that Janna knows Syndra, and is not exactly happy to see here here.
“I have to take a walk,” Janna says. She’s not asking. She doesn’t even look down in my direction. This is weird. I’ve never seen Janna so... so angry. -Blowing off some steam after the interaction with Syndra
The takeaway from this, is that Ahri and MF are not the first Guardians to be surviving members of a team that meet a tragic end. If that's the case however and Syndra is somehow responsible for the deaths of Star Guardians in her quest for power, then why isn't Janna speaking up about it? Why is she just kind of aloof and off in her own world all the time?
I think the answer comes in the form of her "Magical Mediums" as Riot is calling them. The three little spirits that take the place of her normal orbs in game. Given that Normal lore Syndra was willing to kill to allow her power to become unrestrained, so perhaps she simply killed the other members of her team who were trying to hold her back, and left Janna alive as a means to set an example.
However this is basically an anime story line, so things need to be a little more.... over dramatic lets say in the special way that anime is. Also remember Syndra is bothering to blend in with another team and Janna isn't setting much of a warning to others if she keeps quiet. That's why I am going to theorize that the individual parts of Multi are in fact the individual souls of past Star Guardians, (or perhaps their souls are serving as power sources to the spirits itself) trapped within Syndras grasp. I think Syndra threatened Janna to keep quiet, and in turn Janna leaves her alone in the hope that there is still some way to rescue her fallen comrades.
There are three parts to Multi, and with Syndra and Janna that would make a 5, which is the arbitrary number required to form a Star Guardian team. Things could even be darker than that as well. Ahri lost exactly 3 members of her old team as well. If we go with the theory that the individual parts of Multi consumed old Star Guardians, then maybe she is also responsible for the loss of Ahris old team mates as well.
I think its entirely possible that Syndra is feeding Star Guardians to her orbs in order to increase their power doing so in intervals of three to keep them at even levels. Which in term frustrates Janna further, because she sees the same thing happening again, but feels powerless to stop it. Soraka, Ezreal, and MF are probably her next targets. She just has to bide her time considering MF appears to not trust her completely. Discovering the existence of another team, one containing her old ally, probably only requires her to be even more cautious.
