well Alexis has to search the island in general
I do wonder where to drop him, join the Zmerr party so I can react to you guys as well and not just focus with 3 on the other group
or send him to the best and biggest ruin there is (up till now) which is the new home of the K+B with a R and C (XD)

well that he has an Kari can be interesting, just 1 question, you can say which color it is, I got a list right here:
gold
red
blue
teal (trough this is the best strongest able to take on all the others so I want to save it as last)(its made to fight those with a kari who have gone bad)
brown
green
orange
yellow
black
white
gray
purple
pink

(ok so it was a total of 14)
I wont say which can do what, and if you really want Alexis to be powerful enough to fight humans on the short end of the story, give him Teal
its one of the 4 smarts, ranking at the top, I wont say which ones are the other 2 smarts trough or what Teal's exact power is ^^

there is also a top 3 of the strongest, trough depending on uses some might be fitting to join the ranks, but I dont plan on Alexis to be too powerful so he wont be a master with all of them, following the basic line of strongest (well in all honesty, Teal is top, Silver is 3e, so you miss only one (and ironically that is smart kari rank 2 XD)
non are that powerful because their smart kari's, and the second spot is actually a more support type compared to the silver one
yeah I spend a great deal into all of them ^^