GB, Sasuke and the other dogs trick Kamakiri into thinking Weed's army was way, way bigger than it was.
George gets over his fear of water and saves a drowning Reika in the river despite his injury.
In Hokkaido arc, a heel face turned Aramu gets over his guilt and drowns Victor in the water by pulling his leg and trapping him underwater by tying himself in the tangled mass of seaweed.
In the recent Hybrid Bear arc, Ken manages to scare off the bear from killing his injured brother George with a howl and an aura of his father's spirit.
Weed's duel with Victor on the beach in the Hokkaido arc, where he proves once and for all that he's worthy of being Gin's heir.
* Reika spends most of Ginga Densetsu Weed being more or less useless. Near the end of the series she cons Big Bad Hougen into thinking she's in love with him and pushes him into river in order to drown him. It doesn't work, and Reika nearly drowns herself, but hey, she tried.