Sylvester is a roaming resident of My City. He appears when Dayan from Sandpolis is invited to build his Which-Way? Race mini-game in My City. When talking to Sylvester, he will note that My City is a new and fun place to be. He will go on to explain that within My City, there is a special game one can play and asks if the protagonist knows about the Which-Way? Race. Sylvester describes it as a maze but actually not and comments that he believes he is addicted in playing Which-Way? Race.
Sylvester is one of the many recruitable teammates available in My City. In order for him to become recruitable, Stamp 40 needs to be completed as it is required to set up a Garage in My City to start recruiting residents into the city. Afterwards, Dayan will also need to be invited to My City. Then, one will need to simply beat Sylvester within any race he appears in. Afterwards, Sylvester will become recruitable to the team.
Trivia
- There appears to be unused dialogue found within the game files that appears to be a variant of default dialogue.
- "Hey! Nice to meet you! This is a new city, so I meet so many new people! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it!"

Game Dialogue
General Dialogue (North America)
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! See ya!"
Teammate Dialogue (North America)
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! By the way... I'm new here, so I don't have a teammate. I'm a good racer. Will you let me join your team?"
- (No): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See ya!"
- (Yes): "Wow! Thanks! It's worth asking. See ya!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! I like the way you drive! You're fast, and have a good technique. I have to try harder! See ya!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! By the way... I'm new here, so I don't have a teammate. I'm a good racer. Will you let me join your team, replacing your current teammate?"
- (No): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See ya!"
- (Yes): "Who should I switch with?"
- (Quit): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See ya!"
- (Chosen a Teammate to Replace): "Wow! Thanks! It's worth asking. I'll do my best. See ya!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! I like the way you drive! You're fast, and have a good technique. I have to try harder! See ya!"
General Dialogue (Europe)
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! See you!"
Teammate Dialogue (Europe)
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! By the way... I'm new here, so I don't have a teammate. I'm a good racer. Will you let me join your team?"
- (No): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See you!"
- (Yes): "Gosh! Thanks! It's worth asking. See you!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! I like the way you drive! You're fast, and have a good technique. I have to try harder! See you!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! By the way... I'm new here, so I don't have a teammate. I'm a good racer. Will you let me join your team, instead of your current teammate?"
- (No): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See you!"
- (Yes): "Who should I switch with?"
- (Stop): "Oh, I'll give up this time. You seem very fast, so I wanted to join your team. See you!"
- (Chosen a Teammate to Replace): "Gosh! Thanks! It's worth asking. I'll do my best. See you!"
- "Hey! What's up!? This place is new and fun! You know what? There is a special game here. Do you know Which-way? Race? It's like a maze, but it actually isn't a maze. I think I'm addicted to it! I like the way you drive! You're fast, and have a good technique. I have to try harder! See you!"