Second-in-command

The second-in-command refers to a Transformer whose status is...well, second to the commander's. A Transformer who is second-in-command is not necessarily ranked Sub-Commander, while a Transformer ranked Sub-Commander is usually the second-in-command. The rank generally varies between factions. For the Autobots and the Maximals, the rank is usually overlooked, but it still receives its own holiday. For the Decepticons and Predacons, choosing a Second-in-Command is a very tough decision. Pick one too loyal, and everyone will ignore him. Pick one too bold, and the leader may find himself scrap.

Autobot seconds-in-command

"I...want him to take command......"
Prowl:"What?! NOOO!!!"

Sub-commander

• Grimlock (G1)
• Prowl (G1)
• Jazz (G1)
• Jetfire (Unicron Trilogy)
• Ultra Magnus (G1)
• Sentinel Prime (Animated)

Lieutenant

• Blacker
• Lightfoot
• Jazz (G1)
• Jazz (Movie)
• Prowl (G1) - Lieutenant of Generation 1 Sentinel Prime
• Red Alert (Unicron Trilogy)
• Slingshot

Miscellaneous

• Grandus (ROC)
• Ironhide (G1)
• Sky Garry (ROC)
• Waver - Second-in-command of Multiforce
• Ratchet (Animated)
• Jazz (Animated)

Decepticon seconds-in-command

• Cyclonus (G1)
• Leozack
• Scourge (RID)
• Soundwave (G1)
• Scorponok (G1)
• Starscream (G1)
• Starscream (Movie)
• Starscream (Animated)
• Shockwave (Prime)

Maximal seconds-in-command

Sub-commander

• Apache
• Rhinox (BW)
• Triceradon (BM) - Beast Machines Dinobot sub-commander

Lieutenant

• Longrack (BWN)
• Mach Kick - Former lieutenant of the Thoroughbred Corps

Miscellaneous

• Cheetor (BW)
• Rattrap

Predacon seconds-in-command

• Dinobot (BW) - Original second-in-Command to Megatron before he joined the Maximals.
• Guiledart
• Sky-Byte (RID)
• Inferno (BW) - Sub-commander (after the death of Scorponok)
• Megastorm
• Scorponok (BW)
• Antagony - Herald Maximo of Shokaract
• Jetstorm (BM) - Second-in-command to Megatron (BW)
• Thrust (BM) - Second-in-command after Jetstorm was reformatted into Silverbolt.