Okay, let’s start first, with Jonathan Joestar, he is 195 cm, he’s considered as a giant to the Japanese people. Joseph Joestar is also 195 cm, the same as Jotaro.. Starting from Part 4, the JoJos are getting shorter, Josuke Higashikata is 180 cm but at the beginning of part 4 it was revealed that he is 185 cm, Giorno Giovanna is 172 cm, Jolyne is 174 cm (Giorno is shorter than Jolyne), Johnny Joestar is approximately 162 cm (He’s crippled, also he’s a jockey.. Jockeys are usually short, even Diego is below-average.), and Josuke Higashikata/Gappy is taller than his counterpart, Gappy is approximately 185 – 190 cm.
Okay, that’s all, God bless you all and have a MISTA day!!
I imagine you’re talking about Johnathan, but I’ll list every Jojo’s height in this answer! Info provided by the Jojo Wikia.
Johnathan Joestar is 195 cm tall, or 6′5 in Imperial measurements. He’s a big boi
His grandson, Joseph Joestar, is the exact same height. He’s just as big.
And his Grandson Jotaro Kujo is… Yeah, also the same height.やれやれだぜ… How unoriginal, Araki!
Finally, a change in height! Josuke Higashikata is 180 cm (5′11) tall. However, in earlier chapters, his height was listed as 185 (6′1). I guess Araki retconned Josuke’s height in Jojo6251.
Giorno Giovanna, our next anime-destined Jojo is 172 cm (5′8) tall
Jolyne Cujoh is 174 cm (5′9) tall. Can you believe that she’s taller than Giorno? He must be the smallest Jojo yet.
I can’t find any listed heights for Johnny and Gappy.
Well, if you’re looking at parts 1–3 (and a little bit of part 4), where characters are so muscular as to be impossible, the reason is simple. That’s what was popular in the 80’s and 90’s, when Jojo was first being published. Author Hirohiko Araki straight up states in several interviews that many character designs were based off of popular movie stars, who were all super ripped at the time.
Jonathan Joestar, main character of Part 1.
However, they slowly lose muscle mass over time, most notable in part 5. This was part shift towards realism and part shift to a more effeminate, 2000’s style. While they are nowhere near as buff, they are still muscular, similar to greek and roman statues, which Araki used as inspiration (one thing worth note is that Part 5 is set in Italy, so the art shift was almost certainly intentional). The manga changes styles often, but it never quite goes back to the early style.
The main cast of Part 5. Same series.
Anyway, it’s mainly down to the fact that beefiness was popular when Jojo was being published and that Araki loves using statues as models for his work. Hope this helps!