[4] Crothers was born 15 weeks prematurely on 24 October 1997 in Gosford on the New South Wales Central Coast[5] and currently lives in Moorooka, Queensland.

Crothers' prematurity resulted in him developing cerebral palsy due to IVH, and bronchopulmonary dysplasia causing permanent lung scarring.

[citation needed] Crothers requires a vehicle modified with hand controls to legally drive and is currently working towards obtaining a full licence.

[citation needed] At the 2013 Australian Short Course Championships, Crothers broke the men's S9 World Record for the 400 m SC freestyle.

[14] Crothers won gold in the Men's 4×100 m freestyle 34 pts along with William Martin, Matt Levy and Ben Popham, breaking the current World Record by almost 2 seconds.