Michael Strahan is a Super Bowl champion, a Pro Football Hall of Famer and a media star on “Good Morning America.”

According to his ex-wife, the Giants legend is also a deadbeat dad.

Jean Muggli is seeking around $547,000 from Strahan in child support for their twin daughters, according to TMZ Sports.

Muggli claims Strahan has underpaid child support since 2010 because the monthly amount he pays hasn’t been adjusted for cost of living. She is seeking $321,654 in back support, according to court documents obtained by TMZ Sports.

According to court documents obtained by TMZ Sports, Muggli claims Strahan agreed to split horseback riding bills for his daughters Sophia and Isabella. Muggli claims the bills have reached $450,802 since 2017. Strahan claims he never agreed to such arrangement.

Per TMZ, Strahan admits that part of the agreement calls for cost-of-living adjustments but contends that the language of how to come up with that number is “vague and indefinite.”

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Strahan and Muggli were in Manhattan court last month facing off in a previous settlement, according to TMZ Sports.

Strahan and Muggli married in 1999 and divorced in 2006.

The judge eventually awarded Jean $15.3 million in their divorce and ordered him to pay $18,000 a month in child support, according to TMZ Sports. That was decreased to $13,000 in 2009, but his monthly income increased with his gigs on “Fox NFL Sunday” and "Good Morning America.”

The next hearing is scheduled for November when, presumably, a judge will rule on the payments, according to TMZ Sports.

Brian Fonseca may be reached at bfonseca@njadvancemedia.com. Follow him on Twitter @briannnnf. Find NJ.com on Facebook.