Regex, Paper, Scissors, Lizard, Spock
PCRE .NET, 35 32 bytes

-3 bytes thanks to Martin Ender

Rock: 

([*?]$)


Paper:

[)$]$+


Scissors:

[+?]$.*


Lizard:

[+$]$.?


Spock:

[*)]$


The idea here is to match characters at the end of other regexes which are reserved regex characters, but stop being treated as such when inside a character class.