[StainlessSteelCynic]

The Lone Wolf 2.0. We probably all know what's meant by the Lone Wolf type player, that one person who thinks they can deal with any in-game situation all by themselves or they play their character with the bare minimum of interaction with the other PCs (sometimes trying to portray their PC as "dark & brooding" or as some sort of "mystery man/woman"). EDIT: In Raellus' original post, this is The Solo.
The Lone Wolf 2.0 is a variation on that and once again, inspired by a Player in some of games I ran or played in. The 2.0 variant is the type of Player who seems to be onboard with the PC group until any opportunity arises in which they can wander off and do their own thing - and they do, nearly every single time.

This is the type of Player who is so focused on their own character doing whatever it is they're doing, that even the rest of the group being in mortal danger is not enough to convince them to re-join the team. But this is not out of self-preservation, they genuinely feel that what their character is doing is more important than rescuing their team-mates. The kind of Player who has the only character to survive a Total Party Kill type event because their PC was never with the party when that event happened.

Alternately, they sometimes get their PC into some sort of trouble that often results in the death of their PC because they were so intent on doing their own thing, that they left the party and any protection that the group could provide. Surprisingly, some Lone Wolf 2.0 Players are not at all upset or annoyed at the other Players for not helping them because it seems they understand that the other PCs would not be able to locate them and help them in time.
That doesn't stop them from doing exactly the same thing again with their next PC though.