Board Thread:Fun and Games/@comment-27524978-20160317154321/@comment-27907368-20160413014622

Chara being narrator all routes is canon. Check out this brief and informative blog post. ^^ I've also posted a lot of information in other threads about Chara, if it interests you.

There are certainly snippets of Frisk thrown in - however, Frisk acts more through actions than words. An example is Frisk speaking to sans in Judgement Hall to get the key to his house.