Official Names, which I never call any of them:

McMurphy - 3
Whizzer of Oz - 4
Gulliver - 3

Name I use when giving a command (notice all 1 syllable and they all sound different):

Murph - 1
Oz - 1
Gull - 1

When I'm trying to get'em excited or praisin'em I usually use a nickname that's 2 syllables and ends with something I can draw out:

MooBoooooooo
Oz-eeerrrrrrrrrr
Gull-eeerrrrrrrrr
Gull-eeeeeeeee

Then there's a huge list of nicknames with varying syllables that I use just in everyday conversation with them. Too many to list.

Par...