When the party cleric is also a bard:

Cesare Bonizzi, also known as Fratello Metallo, was a Capuchin friar who used heavy metal to "spread the word"

A CC-177 Globemaster III, in case anyone is wondering what plane.

Like all "heaviest [thing] pulled by person" records, the impressive part of the act was the engineers that designed the wheel bearings (and that the canadian air force let some rando touch a Globemaster III...) but this guy does have some legit impressive lifts to his name otherwise.

His body was upgraded from temple to Fortress Church.

When the party cleric is also the tank

Literally 3e/3.5e cleric; can wear any heavy armor, can use all shields except for the tower shield, and divine spells have NO spell failure chance

I remember my party + DM were shocked when my cleric charged to the front of the line during combat because they were used to 4e clerics and traditional cloth wearing WoW priests; I was rocking the highest AC in the party