Use the last letter

[Barbas]

Sly.

 

[UltraDeth]

Yachter

 

[Barbas]

Regalia.

 

[Scarim Coral]

Alpha

 

[Barbas]

Ache.

 

[Johnny Novgorod]

Earache

 

[AZT00Z]

Echidna

 

[TheRiddler]

Arachnid.

 

[UltraDeth]

Dipstick

 

[Barbas]

Kryptonite.

 

[UltraDeth]

Engine

 

[Barbas]

Elementary.

 

[UltraDeth]

Yogi

 

[Barbas]

Infantry.

 

[Fijiman]

yelping

 

[Barbas]

Gaggle.

 

[Scarim Coral]

End

 

[Barbas]

Dorchester.

 

[Johnny Novgorod]

Rotterdam

 

[Barbas]

Merriment.