would it be against the tos to make an app like twitter in roblox?
No, iff
- You don’t use the name Twitter or any of its trade/service marks, including logos
- You don’t take any content from Twitter that is unfiltered
- You filter everything properly
I would recommend checking out DMCA Guidelines
As Tyscripts said
Just like the almost all nike shirts and pants being deleted
Nintendo Copyrights
On October 16, 2016, taymaster tweeted that “ROBLOX Pokemon Go will soon be gone” . The tweet contains an attached image of him emailing Nindendo’s copyright infringement email with links to Roblox games that were profiting off the Pokémon trademark.[3] It is presumed this email led to multiple Pokémon games being removed from Roblox in subsequent years, including Pokémon Universe, Pokémon Arena X, Pokémon Reborn RPG, and Pokémon Brick Bronze.
Similarly, Roblox removed multiple games containing content from Nintendo’s Super Mario on August 14, 2018, including Paper Mario Roleplay by Dogon. The developers of the game later stated that owner Dogon was warned by Roblox for the copyright infringement[citation needed]. Mario Kart:Roblox Dash was deleted a year later. After these games were removed, Roblox censored both Pokémon and Mario from any game names or username, but these words are not filtered in the chat.
So most likely no