Use the last letter

[UltraDeth]

Thief

 

[Barbas]

Flippers!

Spoiler

 

[UltraDeth]

Squee

 

[Barbas]

Alarm.

 

[UltraDeth]

Menagerie

 

[Barbas]

Erebus.

 

[Johnny Novgorod]

Somersault

 

[TheRiddler]

Tumult.

 

[UltraDeth]

Thorpe

 

[Barbas]

Electorate.

 

[Johnny Novgorod]

Elendil

 

[UltraDeth]

Lesson

 

[Barbas]

Nerves.

 

[Johnny Novgorod]

Samurai

 

[Troublesome Lagomorph]

Irritate.

 

[TheRiddler]

Elope.

 

[Johnny Novgorod]

Eunuch

 

[UltraDeth]

Heathen

 

[Barbas]

Nether.

 

[Johnny Novgorod]

Realm