Cyber-Leader

The Cyber-Leaders are Cybermen who are of higher rank than the regular Cybermen, but are still below the Cyber Controller.

Mondas Cyber-Leader 1
The first Cyber-Leader is first seen in the Seventh episode of Season 4. He is bulkier than the other Cybermen and has black handlebars on his helmet. He wields a tube-like gun that fires a blue laser. It's this type of Cyber-Leader who kills Babe in the Season 12 finale.

Helmet Gun Cyber-Leader
This variety of Cyber-Leader first appears in the second episode of Season 8. They resemble the Invasion Cybermen, but they have more tubing on their bodies and completely black helmets, which house guns in their foreheads.

Mondas Cyber-Leader 2
This variety of Cyber-Leader first appears in the fifth episode of Season 11. They are similar to the first variant, but are sleeker and shinier. The Eleventh Doctor possesses this type of Cyber-Leader in Season 12.

Cybus Cyber-Leader
This variety of Cyber-Leader first appears in the penultimate episode of Season 14.5. They resemble the Cybus Cybermen, but they have black faces and exposed brains.