[quote=@SSGSS Senpai]
Here's what I got after a few test runs... Welp, I rolled a whole ninja squad @.@ I'm aware that we have the option to reroll allies/twinned souls (AND I'M SO TEMPTED!), but I'm interested in seeing where this leads.

Do the Ally and twin fill up their own character slots (meaning I would be maxed out on characters) or are they just NPC'S?
[/quote]

[@Rice Porridge] is right, you can have them be minor characters you control or fully fledged PCs.