The 3rd seat of the council maybe but not a wizard saint. Two separate bodies in their government. Council decides who is wizard saint. The council are weaker in individual magical prowess because they are a legislative and judicial body whereas the wizard saints are (supposedly) the ten strongest wizards in Ishgar. They are elected as deterrents and representatives of the councils power.
Michello, the third-seat of Magic Council's Ten Wizard Saint, countered, "Mr. Yajima, we understand your close ties to Makarov and Fairy Tail, but we cannot afford leniency this time. Hasn't Fairy Tail caused enough turmoil?"
Anime & Comics · Ani_Scout
Ashura inherited sage of six paths body whereas Indra inherited his eyes. Thus being a reincarnation of Ashura you inherit the sages body… so Hashirama has sages body.
In the annals of history, Hashirama Senju stands as a titan among shinobi, a figure whose name will forever be etched in the hallowed halls of legend. His legacy continues to resonate through the ages, serving as a reminder of the boundless power that can be achieved through strength, determination, and a heart full of compassion.
Anime & Comics · The_Zen_Boy
Author mentioned that he doesn’t have a lot of chakra in early chapters- so less physical energy. By infinite chakra he is talking about his limitless technique which lets him use an infinitely small amount of chakra for techniques. So he himself does not have infinite chakra in capacity he just can utilise it infinitely. His chakra capacity being low is natural due to his young age and also explains his lower stamina because of the correlation between physical ability and chakra.
However, after a few attacks, a few drops of sweat also flowed from Satoru's forehead. After all, even though his chakra is inexhaustible, he still feels tired.
Anime & Comics · Yeye_Qiu
Though some may hold a direct seat on the council as well as the position (e.g. Jellal). This Michello person is not one of the four gods of Ishgar.
Michello, the third-seat of Magic Council's Ten Wizard Saint, countered, "Mr. Yajima, we understand your close ties to Makarov and Fairy Tail, but we cannot afford leniency this time. Hasn't Fairy Tail caused enough turmoil?"
Fairy Tail : The Strongest Creature
Anime & Comics · Ani_Scout