Tonpetty is a minor ally featured in Part I: Phantom Blood. He is a Ripple master who trained Will Anthonio Zeppeli as well as Straizo and Dire.

Beginning its tale in 19th century England, young aristocrat Jonathan Joestar finds himself locked in bitter rivalry with Dio Brando, a low-born boy who Jonathan's father took under his wing after the death of Dio's father. Discontent with his station in life, Dio's fathomless lust to reign over all eventually leads him to seek the supernatural powers of an ancient Aztec stone mask in the Joestar's possession—an artifact that will forever change the destiny of Dio and Jonathan for generations to come. 
 
Fifty years later, in 1938 New York City, Jonathan's grandson Joseph Joestar must take up his grandfather's mission and master the abilities necessary to destroy the stone mask and its immensely powerful creators who threaten humanity's very existence, the Pillar Men. 
(Source: Anime News Network)

Tamio Ooki was a Japanese voice actor. He was affiliated with Mausu Promotion.

Michael McConnohie is an American voice actor, writer and director who has provided many voice roles in movies, anime, and video games. He and fellow actress Melodee Spevack run a production company called VoxWorks. Some of his major works include the Narrator on Bobobo-bo Bo-bobo and Hunter x Hunter, Azulongmon in Digimon, Gork in Masked Rider, Keiichi Ikari in Paranoia Agent, Rolf Emerson in Robotech, Manzou the Saw in Samurai Champloo, Cosmos and Tracks in Transformers, Hot Shot / Ironhide in Transformers: Robots in Disguise, D in Vampire Hunter D, Chief Inquisitor Margulis in Xenosaga and Charles zi Britannia in Code Geass.

(Source: Wikipedia)

Benoît Allemane is a French actor who specialized in dubbing. He is known for being the French voice of Morgan Freeman. 

After his graduation from the *École Nationale de Théâtre de Strasbourg*, he moved to Paris where he performed various plays and came into contact with voice acting. He did not feel very comfortable doing this so he gave up to focus on others aspects of his profession. 

Around 10 years later he gave dubbing another try after gaining experience from doing post-synchronization for the local television and never stopped since.

Young Jonathan Joestar’s life is forever changed when he meets his new adopted brother, Dio. For some reason, Dio has a smoldering grudge against him and derives pleasure from seeing him suffer. But every man has his limits, as Dio finds out. This is the beginning of a long and hateful relationship!
 
(Source: Viz Media)

Tompetty