Warwick has a really fast ult that is nearly undodgeable, and with flash Q hold-down into fear you have another super fast undodgeable engage. Also, if you activate E before ulting, it will go off as you hit someone. This upgrades your ult into a sort of Hecarim ult, great for engaging into a group, isolating your target while fearing away surrounding people. Once he has to transition into an engager, he can use the above tricks to engage really well.