Rthro

Rthro (previously known as Anthro) is a new avatar type for Roblox, revealed during the Roblox Developers Conference 2017. It was named 'Anthro' because the definition of the word Anthropomorphic is given as the state of having human qualities or characteristics, however it was renamed to Rthro in October 2018. The original avatars were named Ken (male avatar) and Barb (female avatar) by Roblox, following a similar naming fashion to the male and female Barbie dolls.

These avatars stand out as being much more humanoid when compared to the traditional "blocky" appearance that is commonly associated with Roblox avatars. With more joints on the avatar than R6 and R15, animations are also more human-like. Existing catalog content, such as hats, shirts, and pants are expected to be compatible with this avatar. Rthro scaling was released to the public on October 22, 2018, and the first Rthro-specific bundle known as Knights of Redcliff: Paladin (along with the Rthro Animation Package) was published on October 23, 2018.

Enhanced Avatar Scaling Options
On May 30, 2018, an announcement was made on the Roblox Developer Forum showcasing two new sliders for the Body Scale section in the Avatar editor, which led many to believe Rthro had released due to the ability to scale avatars to more realistic shapes. confirmed this as false on his Twitter, where he states that the scaling were what Anthro evolved into.

Unlocked Avatar Scaling Options
On October 15, 2018, another post was made to the DevForum explaining the next stage of Anthro in full detail, and also referred to it as ‘Rthro’.

From the community
Many Roblox users have criticized the realism of Rthro. Many arguments suggest that the former avatars were adding a more realistic avatar would make Roblox strangely realistic and push it towards the uncanny valley due to conflicting with the current blocky appearance of avatars. Users have also expressed concern that Anthro will replace the more traditional R6 and R15 avatar types, however, at that time, it has not been confirmed. However, when Roblox renamed it to Rthro with the Developer Forum Post, many people started to like it better than the original. R6 and R15 have not been removed either.

There were also fears that the new character style will not be compatible with certain hats and gears, and some also believe that Rthro will encourage online dating.

From influencers
At RDC 2017 and on the Dev Forum, multiple Roblox Developers commented on their dislike for Rthro and made jokes about it. Additionally, several Roblox YouTubers have heavily criticized it, claiming that it will be used by online daters.

Leaks
Many users have found the main files for Rthro inside Roblox's files. Lots of videos have surfaced on the web on websites like YouTube about this. These include faces, or what Roblox calls "face projections", legs, textures for bodies, actual bodies, and other unconfirmed avatars.

New Model
Roblox uploaded a model that would become the baseline for all Rthro packages, and can be found here.

Game
A private group led by (which involves some official Roblox administrators as members) has published a testing game called Avatar Future, which allowed users to experiment with scaling and packages pertaining to Rthro before it went private at the end of September 2018.

Trivia

 * Rthro's files were created in 2013.
 * It is a possible theory that Rthro has been in development for 5 straight years.
 * Rthro appears to be larger than R6 and R15.
 * Rthro characters are able to be used in Roblox Studio.
 * The first user to test the Rthro packages is, followed by , , FarazTheGreat , , Captain_Rando and kratos3089.
 * Rthro packages are also available early to certain Admins, Interns, DevForum members and Official Roblox STAR Video Creators.