In making a Companion, please limit yourself to ONE character, that doesn't share interests and focus with your magus. The idea is for him to be a likely participant in adventures your magus wouldn't want to pursue, so build him accordingly.
A good way to do this is to link him to another PC. You can check out the other PCs in the
OOC thread I am setting up. (It isn't finished yet, and neither are the characters.)
You can make any number of grogs that you want, but keep in mind that there are only about 3 warriors and 6 other covenfolk in the covenant, including 3 specialists.
It seems we are going with Teneo, then. Check out its full description in the
OOC thread. If you have any comments or improvements, do tell. We also need to choose the books and raw vis, but this can wait until the first downtime in the campaign.
Edit: The rules for creating companions and grogs in AM5 are similar to those in AM4, you may create an AM4 character or sketch it if you want me to convert it to AM5.