Ice Wall

From MMKB

Ice Wall is Cold Man's main weapon. It creates an ice column that can be pushed to attack enemies. It's Burner Man's weakness; using it on him pushes him into the spikes that surround his room. This weapon is very helpful for Mega Man, as he cannot double jump like Bass, and it can be used to pass by spikes. Cold Man's Ice Wall is spiked and can't be used to transport.