The recent release of Issue 9: Breakthrough has also introduced a few more City of Heroes / City of Villains emotes. Check the Matid's website for the animation of most of them, or read ahead for the complete list of available emotes.
To activate an emote, simply type /em and the name of the emote. For example, if you would like to perform the Afraid emote you should type /em afraid.
NOTE: You can also type /e such as: /e wave.
AFK
Afraid
Akimbo
Angry
AssumePositionWall
AtEase
Attack
BatSmash
BatSmashReact
BB
BBAltitude
BBBeat
BBCatchMe
BBDance
BBDiscoFreak
BBDogWalk
BBElectroVibe
BBHeavyDude
BBInfoOverload
BBJumpy
BBKickIt
BBLooker
BBMeaty
BBMoveOn
BBNotorious
BBPeace
BBQuickie
BBRaver
BBShuffle
BBSpaz
BBTechnoid
BBVenus
BBWahWah
BBWindItUp
BBYellow
BeatChest
BigLaugh
BigWave
Binoculars
Boombox
Bow
Bowdown
Burp
BuzzOff
Camera
Cellphone
Champion
Cheer
Clap
Clipboard
Coin
CoinToss
Cower
CrossArms
Crouch
CurseYou
Dance
Dice
Disagree
DontAttack
Drat
DropBoombox
Drum
DrumDance
DrumLow
ELaugh
ElegantBow
EvilLaugh
Explain
FancyBow
Fear
Fishing
Flashlight
Flex
Flex1
Flex2
Flex3
FlexA
FlexB
FlexC
FlipCoin
FlippingCoin
FloatBooks
Frustrated
GoAway
Grief
Hand
Handsup
Hi
HoldTorch
Howl
Huh
JumpingJacks
Kata
Kneel
Laptop
Laugh
Laugh2
LaughToo
Lecture
Ledgesit
Lotus
MartialArts
MilitarySalute
Muahahaha
Newspaper
No
Nod
Noooo
OverHere
Panhandle
Paper
PeerIn
Point
Praise
Protest
RaiseHand
Research
ResearchLow
Roar
Rock
RollDice
Rooting
Salute
Scared
Scissors
Score1
Score10
Score2
Score3
Score4
Score5
Score6
Score7
Score8
Score9
Shucks
Sit
Slap
SlapReact
Slash
SlashThroat
Smack
SmackYou
Sorry
Stop
Surrender
Talk
TalkToHand
Tarzan
Taunt
Taunt1
Taunt2
TauntA
TauntB
Thanks
ThankYou
TheWave
ThreatHand
Thumbsup
Victory
VillainLaugh
VillainousLaugh
Waiting
WallLean
Wave
WaveFist
Welcome
What
Whistle
Wings
Winner
Wounded
Yata
YataYata
Yes
Yoga
YoureWelcome
Flying Animation Emotes
NOTE: These will only interrupt flying forward animations.
FlyPose1
FlyPose2
FlyPose3
FlyPose4
NOTE: Certain emotes that do not look correct on the Kheldian Dwarf models have been disabled.
City of Heroes/Villains 
