Picture and version info taken from sarna, the masterunitlist and the Solaris Skunk Werks
| IMP-1A | IMP-1B | IMP-1C | IMP-2E | IMP-3E | IMP-4E | |
|---|---|---|---|---|---|---|
| Overview | ||||||
| Type | Battlemech | Battlemech | Battlemech | Battlemech | Battlemech | Battlemech |
| Tonnage | 100 | 100 | 100 | 100 | 100 | 100 |
| Engine | 300 Standard | 300 Standard | 300 Standard | 300 Standard | 300 XL | 300 Standard |
| Top Speed | 48.6 kph | 48.6 kph | 48.6 kph | 48.6 kph | 48.6 kph | 48.6 kph |
| Max. Engine | 360 | 360 | 360 | 360 | 360 | 360 |
| Armor | Standard | Standard | Standard | Standard | Standard | Standard |
| Internal Structure | Standard | Standard | Standard | Standard | Standard | Standard |
| Heat Sinks | 18 Double | 19 Double | 17 Double | 30 Single | 30 Single | 21 Double |
| Jump Jets | No | No | No | No | No | No |
| ECM Capable | No | Yes | Yes | No | No | No |
| MASC Capable | No | No | No | No | No | No |
| Weapons and Equipment | ||||||
| Head | Small Laser | Medium Pulse Laser | Small Laser | Single Heat Sink | Single Heat Sink | ER Medium Laser |
| Left Arm | Medium Pulse Laser, Double Heat Sink x2 | Medium Laser, Double Heat Sink x3 | Medium Laser x2, Double Heat Sink x2 | Medium Laser | Large Pulse Laser, Single Heat Sink x3 | ER Medium Laser, Double Heat Sink x3 |
| Left Torso | ER PPC, Medium Laser, LRM Ammo x2, CASE, Double Heat Sink | ER PPC, Medium Laser, LRM Ammo x3, CASE, Double Heat Sink | ER PPC, Medium Laser, Double Heat Sink | PPC, Medium Laser, LRM Ammo, Single Heat Sink x6 | ER PPC, LRM Ammo x2, CASE, Single Heat Sink x3 | ER PPC, ER Small Laser, LRM Ammo x2, Double Heat Sink x2 |
| Center Torso | Engine, Medium Pulse Laser x2 | Engine, Medium Laser x2 | Engine, Medium Laser x2 | Engine, Medium Laser x2 | Engine, Medium Pulse Laser x2 | Engine, Medium Pulse Laser x2 |
| Right Torso | ER PPC, Medium Pulse Laser, Double Heat Sink x2 | ER PPC, Medium Laser ECM, Double Heat Sink x2 | ER PPC, Medium Laser ECM, Double Heat Sink x2 | PPC, Medium Laser, Single Heat Sink x7 | ER PPC, Medium Laser x2, Single Heat Sink x4 | ER PPC, ER Small Laser, Double Heat Sink x3 |
| Right Arm | LRM-20 Artemis, Double Heat Sink | LRM-20 Artemis, Double Heat Sink | Gauss Rifle, Gauss Ammo x2 | LRM-15 | LRM-15, Single Heat Sink x3 | LRM-20 Artemis, ER Medium Laser, Double Heat Sink |
| Left Leg | Single Heat Sink x2 | Single Heat Sink x2 | ||||
| Right Leg | Single Heat Sink x2 | Single Heat Sink x2 | ||||
| Hardpoints | ||||||
| Head | 1 Energy | 1 Energy | 1 Energy | 1 Energy | ||
| Left Arm | 1 Energy (Available Actuators: Upper) | 1 Energy(Available Actuators: Upper) | 2 Energy (Available Actuators: Upper) | 1 Energy (Available Actuators: Upper) | 2(1) Energy (Available Actuators: Upper) | 2(1) Energy (Available Actuators: Upper) |
| Left Torso | 2 Energy | 2 Energy | 2 Energy | 3(2) Energy | 1 Energy | 2 Energy |
| Center Torso | 2 Energy | 2 Energy | 2 Energy | 2 Energy | 2 Energy | 2 Energy |
| Right Torso | 2 Energy | 2 Energy, ECM | 2 Energy, ECM | 3(2) Energy | 3 Energy | 2 Energy |
| Right Arm | 2(1) Missile (Available Actuators: Upper, Lower) | 1 Missile (Available Actuators: Upper, Lower) | 1 Ballistic (Available Actuators: Upper, Lower) | 1 Missile (Available Actuators: Upper, Lower) | 2(1) Missile (Available Actuators: Upper, Lower) | 1 Energy, 1 Missile (Available Actuators: Upper) |