His time in the third round of 15 Strangers didn't affect him terribly much beyond what development he's had in canon. During this time, the group was recruited as "micronauts" to fight a disease inside the body of a person known only as the "girl genius", and I promise that it makes just as much sense in context. This was literally a murdergame set inside someone's butt.
The first couple of deaths left him rattled: Akira's trial because he honestly liked the kid and wasn't willing to go through with voting for him (and he didn't), and Naoya's because of the sheer lengths Naoya was willing to go through to desperately escape being voted for. He had no real sympathy for when their overseer got executed in the third trial, though.
Apart from the usual CRAU shenanigans, such as a man from a medieval fantasy universe being introduced to modern technology for the first time, Molly's also grown slightly more willing to give up personal information about himself if he has to. The impact this had on the group was somewhat lessened here, though: because no one asked about his personal history, Molly didn't think it necessary to give it. This came back to bite him in the ass during the second trial, where he was nearly accused of murder. Luckily, he's not willing to die for the sake of a secret. He's not willing to die for much of anything. It also came into play during endgame, when everyone had the chance to recover their lost memories -- Molly was the only person who declined, under the mistaken belief that the memories he'd recover would be those of "Lucien". A man who Molly, for all intents and purposes, considers to be both dead and a different identity from his own. The resultant confusion and concern was what finally prompted him to speak up.
He's still likely to bullshit in non-critical situations, though.
Revisions Pt. 2 (CRAU)
The first couple of deaths left him rattled: Akira's trial because he honestly liked the kid and wasn't willing to go through with voting for him (and he didn't), and Naoya's because of the sheer lengths Naoya was willing to go through to desperately escape being voted for. He had no real sympathy for when their overseer got executed in the third trial, though.
Apart from the usual CRAU shenanigans, such as a man from a medieval fantasy universe being introduced to modern technology for the first time, Molly's also grown slightly more willing to give up personal information about himself if he has to. The impact this had on the group was somewhat lessened here, though: because no one asked about his personal history, Molly didn't think it necessary to give it. This came back to bite him in the ass during the second trial, where he was nearly accused of murder. Luckily, he's not willing to die for the sake of a secret. He's not willing to die for much of anything. It also came into play during endgame, when everyone had the chance to recover their lost memories -- Molly was the only person who declined, under the mistaken belief that the memories he'd recover would be those of "Lucien". A man who Molly, for all intents and purposes, considers to be both dead and a different identity from his own. The resultant confusion and concern was what finally prompted him to speak up.
He's still likely to bullshit in non-critical situations, though.