He is first seen battling with another Youngster, Mikey, and blocking the route. After the player delivers the Mystery Egg to Professor Elm, Joey is done with battling after his apparent loss to Mikey. He is now ready to challenge the player with his Rattata. After the battle, he gives out his Pokégear number and hence can be rematched. After every rematch, Joey will give out an HP Up to the player.
"I just lost, so I'm trying to find more Pokémon. Wait! You look weak! Come on, let's battle!"
"Ack! I lost again! Doggone it!"
After being defeated
"Do I have to have more Pokémon in order to battle better? No! I'm sticking with this one no matter what! Listen, can I get your phone number? I'll ring you for some battles. I'm a rookie too, so I think it'd be a good motivator."
No: "Oh, all right... But I won't lose to you again!"
If talked to again
"Can I get your phone number? I don't want to lose against you! We have to battle again, OK?"
Yes: "I'll ring you whenever I get the urge to battle!"/"Huh, what? Your phone's full."
"I've been waiting! Let's battle now!"
Calling the player
"Yo, <player>! How're you doing? This is Joey, got a minute?"
"Yo, <player>! How's it going? This is Joey. Got a minute?"
"How are your Pokémon doing? My Rattata's looking sharper than before! I doubt there's a Pokémon as cool as this guy in your party!"
"How are your Pokémon doing? My Rattata's raring to go, just like always. It's the only one I have. I'm going to become a great trainer with it!"
"Oh yeah, I saw a wild <Pokémon>! I thought about going for it, but I decided to work with my one-and-only right to the extreme end."
"Oh yeah, I took down a <Pokémon> in the wild the other day. It was a cakewalk. Well, I guess it can't be helped, us being so tough."
"My Rattata's looking awesome! I wish I could show you. Hey, listen! I almost caught Pokémon the other day. Oh, it was soooo close too! See you later!"
"Let's get together and battle! I promise things will be different! Route 30's where I'll be. Give me a shout when you come. All right. Later!"
"What's keeping you, <player>! Let's get down and battle already! I'm waiting on Route 30!"
"All right. Later!"
"Hi, Joey here! Oh, <player>? You doing well? I'm checking out Rattata's moves and devising some strategies. When I come up with a good one, let's battle! All right. Later!"
He is first seen in Gold's garden, on the way to Professor Elm's lab to deliver several Pokémon to the professor for examination. However, his backpack was stolen by a wild Murkrow, along with Gold's radio antenna, causing Gold's radio to lose broadcast. After noticing that something is wrong with the radio, Gold spots Joey in the garden and mistakes him for the thief. The Youngster explains that the real thief is Murkrow. Gold then decides to retrieve the stolen objects. He soon succeeds and catches the Murkrow. The boys soon become friends.
After the incident with Murkrow, Gold and Joey travel together for a while. After a trip in New Bark Town, Gold notices Pokémon from his backpack have been stolen and they go to the laboratory to tell Professor Elm about it. Unfortunately, they come to the lab just after Silver stole the Totodile. After that, Joey uses his computer to montage a picture of Silver for the police. Then, they meet Professor Oak who is interested by the fact that Silver had a Pokédex. It turns out that Oak was the one who ordered him to deliver the Pokémon to Elm. Gold wants to get a Pokédex from Professor Oak, but the professor refuses.
After that, Gold decides to train when a thunderstorm starts to rage. Joey's Rattata falls into the river, and Gold goes to rescue it. After Joey tells this to Oak, the professor decides to give Gold the Pokédex. After that, Joey decides to return to New Bark Town to pay Elm a visit, while Gold decides to search for Silver. The boys go separate ways.
Joey is later seen in a cameo, where he is helping Professor Elm.
In the Pokémon Gold & Silver: The Golden Boys manga
Joey is first seen in the very first chapter of the manga. He is battling Gold's Totodile with his Rattata. After the battle, Gold tells Joey how he got his Totodile in a flashback scene. Then, the boys spot an injured Pidgey lying amidst the grass of Route 28. After Gold helps the Pidgey recover using a Berry, Joey starts to appreciate Gold's kind heart. After that, the boys go separate ways.
Joey's Raticate was first seen as a Rattata in a flashback during the first chapter. It battled Gold's Totodile and lost despite the fact that Totodile was Gold's newly caught Pokémon. When Joey was on the summit in Ecruteak City, his Rattata was revealed to have evolved into a Raticate.