[PoppyC]

I think who you are depends to an extent on the people you're with. I can be talking and joking constantly, completely silent, or anything in between.

Jenkin probably was very loud and full of personality when he was auditioning because he was up against people who didn't get into the house. He also wasn't trapped with them. But now, he's found himself in a house full of loud people and he's struggling to connect. Some people will shout louder in order to be heard (and quite likely annoy everyone). Others will clam up. Jenkin has clammed up.

It could be he'll find a place in the house if some of the bigger characters leave before he does because there will be more time for him to get a word in. But in most series, at least 1 person has walked because they just haven't felt right in the house. I hope it won't happen, but Jenkin is looking like the most likely person to walk