The description of 1569-1's internals is a little confusing. There's a good deal of repetition that could be taken out, not to mention the storage organ can't be identical to the one in 1569 unless it's been sized down; don't want to leave something like that up to assumption.
I recommend starting addendum 02 off with the D class entering the carapace. The way it's structured made me question whether he was in there. And I'd also say the last note about what happened to him, beyond administration of amnestics, is superfluous.
But other than that, this is kind of a neat idea. One part Giant Animal, one part cute, one part Builder Bear. All Shark Punching CenterWait, this is actually from the Shark Punching Center? I'm not sure how to feel about that, being the only person on the site who still thinks the SPC is funny.