Bradford head coach Mick Potter has broken with Bulls tradition by naming two captains for this season.
Heath L'Estrange, 26, and Matt Diskin, 29, will share the captaincy for the forthcoming campaign.
Potter said: "Matt brings a calm and calculated approach on the field and is a thorough professional, whilst Heath is very enthusiastic with great leadership qualities.
"We will have a natural leader on the field throughout the game."
L'Estrange is in his third season with the club after joining from NRL side Manly while former GB hooker Diskin joined the club from Leeds Rhinos at the start of last season.
They take over the role vacated by Andy Lynch after his move to Hull FC.