Nicknames for Angel Investigations throughout the seven seasons of Angel have been:

“A bunch of proto-losers” by Cordelia in 4.06 Spin The Bottle
“Fearless vampire killers” by Lorne in 4.06 Spin The Bottle
“A bunch …

In 1.15 The Prodigal, once Liam has been sired, he returns home to murder his family, and his sister, believing he was dead, thinks that he has come back as an …

Some characters have a habit of putting the word “Captain” before nicknames on both Buffy the Vampire Slayer and Angel.

Angel has been called Captain America by Jack McNamara in ::The …

On the following occasions, Cordelia mocks Lindsey with a couple born-again nicknames. First in 1.21 Blind Date:

Lindsey: “You’d have to burn your way in.”
Cordy to Angel: “Why …

Xander calls Buffy “Buffster” in the episodes 3.02 Dead Man’s Party, 3.07 Revelations, 5.01 Buffy Vs Dracula and 5.19 Tough Love.

In 6.09 Smashed, Xander calls Spike, “Captain Peroxide”. In 7.22 Chosen, Angel says to Buffy about Spike, “I’m getting the brush-off for Captain Peroxide”.

Cordelia has a habit of giving people sarcastic new surnames.
She has called Angel:

“Mr. I Was Alive for 200 Years and Never Developed an Investment Portfolio” in 1.01 City of.
“Mr. I …

The following is from 3.13 Waiting In The Wings:

Cordy: “Well, get it done, Johnny Reb. So I can hear about something else, and you can do something else besides feeling your …

In 4.20 The Yoko Factor, Riley calls Angel “Mr. Billowy Coat King of Pain”. Angel’s long black coat billowing as he walks away mysteriously is a trademark of his.

Lorne is fond of giving people nicknames. Many of these nicknames have been of the edible variety. He has called Angel:

“A big hunk of hero sandwich” to Angel …

Spike’s pet name for Dawn is “Niblet”, heard in 5.13 Blood Ties, 6.19 Seeing Red, 7.02 Beneath You and 7.17 Lies My Parents Told Me.

Xander said to Willow in 1.03 The Witch:

“That is the point, you don’t have to drive it through my head like a railroad spike.”

The character of Spike (introduced in season …

In 4.04 Fear, Itself, Xander calls Buffy “Red”. Spike called Willow “Red” in 7.03 Same Time, Same Place and 4.20 The Yoko Factor, and Faith called Willow this in 4.15 This Year’s Girl. Kennedy …