Billy Ray Leung in Wicked Game, a live-action buddy-heist B-movie with fellow Power Rangers star Jason Narvy (Skull of Bulk and Skull), which mostly served to show off his martial arts and stunt skills.
Tohru Adachi and the Protagonist, Yu Narukami, in Persona 4, Persona 4: The Animation, and Persona 4 Arena. The Protagonist is just a Heroic Mime in Persona 4 and in the few instances in which he speaks, he sounds more like a Power Ranger (he calls out almost every Persona like he's saying "IT'S MORPHING TIME!"). Though in Arena, he's a mime no longer and sounds quite a fair bit like Adachi. To try and fix this, Adachi sounds much raspier in The Animation while Yu sounds more neutral.
Johnny was the English voice of Daisuke Ono after the two shared the role of Itsuki.
Crossdressing Voices: While he hasn't voiced any female characters, some of the younger boy roles he's played happened to be voiced by a woman in the Japanese dub (i.e. Renton and Ryuto). In fact, the youngest character he's voiced in anime is Noby/Nobita from Doraemon, who happens to be 10-years old.
Dumb Is Good: If his character is good, he's generally not that intelligent. If his character is smart, he's generally not very good.
Ichigo Kurosaki is an interesting aversion to this trope, because while he's got the Leeroy Jenkins thing down, he's actually quite intelligent, both in school and in battle. This totally applies to Ichigo's Superpowered Evil Side, though.
Yu Narukami is a complete aversion. Not only is he very smart and resourceful in battle and school, he's also the main hero. Or it's possible said smarts come from eating stuff out of the fridge.
Full-Name Basis: A lot of people say his full name when talking about him; even on this wiki.
One exception was in the first few episodes of Power Rangers where he was introduced, when he was credited under John Bosch.
Hey, It's That Voice!: Since his vocal range is limited due to typecasting, his voice acting is easily the most recognizable by many fans, even when he's supposed to be playing a different character.
Subverted with the title character from Soul Eater, he was misattributed to this character before it was later announced that the newcomer Micah Solusod is voicing Soul. * It also doesn't help to note the fact that Johnny worked with FUNimation on several titles in the past. Justified, as he was raised in a town in Texas during his childhood years where it's located near Funimation's headquarters
And when you thought that things couldn't get any funnier, Eureka Seven AO gets dubbed and has Johnny and Micah playing father and son, and Space Dandy and Free! feature both Johnny and Micah in the casts.
Likewise with Pit in Kid Icarus: Uprising (actually Antony Del Rio). This case is interesting because it persisted even after Johnny himself stated that he didn't voice Pit.
While he's capable of pulling off a high-pitch voice like Renton Thurston, he hadn't played any role that involved pulling off an accent. That was until:
He's spoken in a completely different language in a dub - being Izaya's voice actor required him to speak Russian for a few lines. It sounds near perfect compared to Izaya's original voice.
Similarly, while still easily recognizable, he also attempted a Japanese accent in Binary Domain as Kurosawa. Seeing as he'd worked a lot of anime titles in the past, it's no surprise he managed to pick this accent up quickly.
Perishing Alt Rock Voice: Johnny sings this way pretty often, probably because his voice has gone raspy from all the yelling he's done in doing anime voices.
Revolving Door Band: While Eyeshine has some fame, the band isn't a full time gig for any of its members. As such, many members have had to leave to focus on their careers or left for personal reasons, so the band's gone through many guitarists and bassists.
Studio Chatter: Done at the beginning of "Blackout" on Red Stripes White Lights.
Team Dad: Crossing over with Papa Wolf, Johnny is definitely this. He takes very good care of his bandmates and will shed his normally easygoing demeanor if a situation could affect them or the band negatively.