English to Regretevator Infected (and reverse translation)

Ever want to write like Infected from Roblox's Regretevator? Now you can! Infected is an NPC stuck thinking and acting like a "quirky" Roblox player from the early 2010's. He speaks English but with some letters replaced with numbers and randomly capitalized letters. He also uses emojis like XD ~( ˘-˘~) ( -•)╦̵̵̿╤─ and >< An example of a sentence from him looks like this: "Im da Sw4Giest [Content Deleted] on the BL0cK, B)"