He is considered as mukhya prANa by followers. He was an influential figure in vaishnava tradition as well as vedanta. There are several miracles associated with him and his disciples.
Some of the miracles are mentioned below
As a child he had performed a lot of miracles, which foretold his
future greatness. Once he was asked to protect the curds and milk kept
in the pots from cats. Being playful and restive child, he lifted two
huge pieces of granites and closed the milk and curd pots. These
mosuru kallu (curd stone) and Halu kallu (milk stone) has been
preserved for the posterity, even today at Pajaka shetra.
Madhyageha bhataa (father of Vasudeva), once took loan from a local
money lender for purchasing cows. He was not able to pay back the
debts and the money lender was pressurizing him. On knowing this
Vasudeva(Madhwa) gave a handful of tamarind seeds to the money lender
and said that father’s loan has been settled. To the money lender’s
surprise, the tamarind seeds given by Vasudeva was turned in gold
nuggets and money lender was happy to receive the loan had paid back.
One day when he was teaching Ithreya Upanishad to his pupils, he
suddenly disappeared in a Pushpa vrishti (shower of flowers). That day
is celebrated every year as Madhwa navami during magha shukla paksha.
It is believed; even today he is staying at upper Badari and listening
to Sri Vedavyasa’s teaching.