Broseidon
From Openwaterpedia
Extreme athlete Ross Edgley, the Original Broseidon
noun - Broseidon is a male open water swimming friend, mentor, pace swimmer, workout buddy, or colleague.
Usage
The two Broseidons entered the water for their first ice swimming event.
Origin
It is a portmanteau word that combines brother and Poseidon that was first coined by Ross Edgley in 2018 during his Great British Swim.