Source: Roblox Creator Hub · CC BY 4.0 · View source · Code samples: MIT Imported 2026-10-03. Formatting adapted for this site.
FACS poses reference
The Facial Action Coding System (FACS) is a comprehensive, anatomically-based system for describing all visually discernible facial movement. This system breaks down all facial expressions into individual types of muscle movement, such as LeftEyeClosed or MouthLeft. You can configure and store these muscle movements, or poses, within the head model through a third-party modeling software, such as Blender or Maya. When you import the head model into Studio, you can then access and animate these poses to create lively facial expressions.
The following is a list of 50 base poses that you can use in Roblox to portray a wide range of face emotions. Except for the first neutral pose, the order of poses you save to your character model doesn't matter since this information is set during the mapping process as a custom property.
Note
If you intend to publish your avatar to the Marketplace, your avatar head must include the required 17 facial base poses. Marketplace validation rejects assets that do not include these 17 required base poses.
You can combine multiple FACS base poses together in one animation frame to create complex facial expressions. However, some combinations of poses might collide unless you also add a corrective to their full default values.
LeftEyeClosed
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftEyeClosed closes the character's left eyelid.
RightEyeClosed
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightEyeClosed closes the character's right eyelid.
EyesLookDown
Note
If publishing to the Marketplace, your avatar asset must include this pose.
EyesLookDown makes the eyes gaze down.
JawDrop
Note
If publishing to the Marketplace, your avatar asset must include this pose.
JawDrop lowers the jaw downward, opening the mouth.
Pucker
Note
If publishing to the Marketplace, your avatar asset must include this pose.
Pucker makes a kiss-like shape with the mouth.
LeftLipCornerPuller
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftLipCornerPuller raises the corners of the mouth upwards in a smile.
RightLipCornerPuller
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightLipCornerPuller raises the corners of the mouth upwards in a smile.
ChinRaiser
Note
If publishing to the Marketplace, your avatar asset must include this pose.
ChinRaiser raises the chin up; moves the lower lip upwards.
When you use ChinRaiser and the character's mouth is closed, the character's lower lip collides with their upper lip. When you need to keep the mouth closed while raising the chin, use ChinRaiserUpperLip and ChinRaiser together to raise both the lower and upper lip, and avoid a collision. Note that if you use this method, you must set both ChinRaiser and ChinRaiserUpperLip to the same value so the lips move the same distance upwards.
ChinRaiserUpperLip
Note
If publishing to the Marketplace, your avatar asset must include this pose.
ChinRaiserUpperLip raises the upper lip up when ChinRaiser is engaged and it is touching the upper lip.
LeftCheekRaiser
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftCheekRaiser squints the character's left eye.
RightCheekRaiser
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightCheekRaiser squints the character's right eye.
LeftInnerBrowRaiser
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftInnerBrowRaiser raises the interior half of the character's left brow upwards.
RightInnerBrowRaiser
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightInnerBrowRaiser raises the interior half of the character's right brow upwards.
LeftLipCornerDown
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftLipCornerDown lowers the corners of the mouth downwards in a frown.
RightLipCornerDown
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightLipCornerDown lowers the corners of the mouth downwards in a frown.
LeftLowerLipDepressor
Note
If publishing to the Marketplace, your avatar asset must include this pose.
LeftLowerLipDepressor lowers the lower lip downwards away from the upper lip, revealing the lower teeth.
RightLowerLipDepressor
Note
If publishing to the Marketplace, your avatar asset must include this pose.
RightLowerLipDepressor lowers the lower lip down away from the upper lip revealing the lower teeth.
EyesLookLeft
EyesLookLeft makes the eyes gaze left.
EyesLookRight
EyesLookRight makes the eyes gaze right.
EyesLookUp
EyesLookUp makes the eyes gaze up.
LeftLipStretcher
LeftLipStretcher stretches the corners of the mouth apart.
LeftUpperLipRaiser
LeftUpperLipRaiser raises the character's left upper lip away from the lower lip revealing the upper teeth.
LipsTogether
LipsTogether brings the character's lips together. However, if the character's mouth is closed, their lips are already together and they collide.
This pose's main use case is in connection with the JawDrop property. If you set JawDrop and LipsTogether to 100% of their default values, the character's lips stay together as the jaw drops.
In addition, if you set JawDrop to 100% of its default value, and ease LipsTogether in and out of 100% of its default value, the character's lips open and close.
RightLipStretcher
RightLipStretcher stretches the corners of the mouth apart.
RightUpperLipRaiser
RightUpperLipRaiser raises the right upper lip away from the lower lip, revealing the upper teeth.
FlatPucker
FlatPucker brings the corners of the mouth inward and presses the lips back against the teeth. This pose is also known as lip tightener.
Funneler
Funneler makes an 'O' shape with the mouth.
LowerLipSuck
LowerLipSuck rolls the lower lip up over the teeth.
LipPresser
LipPresser presses the lips together.
MouthLeft
MouthLeft moves the mouth to the character's left. This property doesn't move the character's jaw, teeth, or tongue, only their mouth. If you want to move those additional facial features, use JawLeft instead.
MouthRight
MouthRight moves the mouth to the character's right. This property doesn't move the character's jaw, teeth, or tongue to the right, only their mouth. If you want to move those additional facial features, use JawRight instead.
UpperLipSuck
UpperLipSuck rolls the upper lip around the teeth.
LeftCheekPuff
LeftCheekPuff puffs up the character's left cheek.
LeftDimpler
LeftDimpler moves the corners of the left side of the mouth back toward the teeth.
RightCheekPuff
RightCheekPuff puffs up the character's right cheek.
RightDimpler
RightDimpler moves the corners of the right side of the mouth back toward the teeth.
JawLeft
JawLeft moves the character's jaw, teeth, tongue, and lower lip to their left. If you just want to move the character's mouth to their left, use MouthLeft instead.
JawRight
JawRight moves the character's jaw, teeth, tongue, and lower lip to their right. If you just want to move the character's mouth to their right, use MouthRight instead.
Corrugator
Corrugator brings the left and right brows inward together.
LeftBrowLowerer
LeftBrowLowerer lowers the character's left brow down.
LeftOuterBrowRaiser
LeftOuterBrowRaiser raises the outer part of the character's left brow upwards.
LeftNoseWrinkler
LeftNoseWrinkler raises the character's left nostril, pulls the brow down slightly, and wrinkles the left side of the nose.
RightBrowLowerer
RightBrowLowerer lowers the character's right brow down.
RightOuterBrowRaiser
RightOuterBrowRaiser raises the outer part of the character's right brow upwards.
RightNoseWrinkler
RightNoseWrinkler raises the character's right nostril, pulls the brow down slightly, and wrinkles the right side of the nose.
LeftEyeUpperLidRaiser
LeftEyeUpperLidRaiser raises the character's left eyelid upwards to reveal more of the eye white above the iris.
RightEyeUpperLidRaiser
RightEyeUpperLidRaiser raises the character's right eyelid upwards to reveal more of the eye white above the iris.
TongueDown
TongueDown bends the tongue down. This pose is only visible if you combine it with TongueOut, otherwise the tongue only bends down within the character's mouth.
TongueOut
TongueOut sticks the tip of the tongue out of the mouth.
TongueUp
TongueUp bends the tongue up. This pose is only visible if you combine it with TongueOut, otherwise the tongue only bends up within the character's mouth.