Odd One Out

[D_K_Head]

This is another forum game, but a different sort. A question is set: Which is the odd one out? The one who correctly guesses answer from the four provided (and hopefully the reason) gets to set the next question. They can choose to pass on setting a question, in which case, it's the first person to post one.

ODD ONE OUT

1) PBZPLIN

2) HIHOAG

3) FEMAIDN

4) ROLLINC

EDIT: Shouldn't have removed the spaces. Here's what they looked like when I first thought this up

1) PB ZPLIN

2) HI HO AG

3) FE MAIDN

4) ROLLIN C