I sometimes nickname.
Like the Unown I caught and stuffed into MPR got their respective letter of the alphabet placed in between parentheses.
- Unown (X)
I favor TURTWIG for the Sinnoh starter.
Tortrunk, the TORTERRA
Other:
:P ikachu, the PIKACHU (yes, it has a space)
W-----D 40, the WAILORD (refers to WD-40)
Gaydar-OS, the GYARADOS (OS = Operating System; as 'nasty' as my nicknames get)
*Smeargle I use for breeding get named based on what their pair, and moveset, is.
~eg. Snub-HB, the SMEARGLE pairs with Snubbull. HB is for Heal Bell, though Close Combat is on it as well.
**My 'Smeargle Monks' get named, in part, on their alignment
~eg. Gravehound, the SMEARGLE is 'Ghost-type' aligned
~~Conversion, Curse, Recover, Shadow Force