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We associate, in a functorial way, a monoidal bicategory $\mathsf{Span}|\mathcal V$ to any monoidal bicategory $\mathcal V$. Two examples of thisconstruction are of particular interest: Hopf polyads (due to Brugui\`eres) canbe seen as Hopf monads in $\mathsf{Span}| \mathsf{Cat}$ while Hopf groupmonoids in a braided monoidal category $V$ (in the spirit of Turaev andZunino), and Hopf categories over $V$ (by Batista, Caenepeel and Vercruysse)both turn out to be Hopf monads in $\mathsf{Span}| V$. Hopf group monoids andHopf categories are Hopf monads on a distinguished type of monoidales fittingthe framework studied recently by B\"ohm and Lack. These examples are relatedby a monoidal pseudofunctor $V\to \mathsf{Cat}$.

Hopf polyads, Hopf categories and Hopf group monoids viewed as Hopf monads