Okay, with help of the Vehicle Designer Spreadsheet I came up with the following design:
Commercial Security Robot
Medium Size Upright cylindrical body
TL: 12
Vl: 150
Crew 0
Max Speed: 15Kmph
Acceleration: 5kmph
Drive Train: Tracked (2 tracks)
Power Plant: Advanced Fuel Cells (10ep per hour)
Fuel: 36
Operational Duration: 72 hrs
Backup Battery: 100 stored EP, 4 hrs to discharge.
Appendages: 2 (12 str 12 dex)
Spotlight: 1
Sensors: Infrared (short), Light Intensification (short), Radar (Medium),
Auditory (close), Tactile (touch)
Comm: Voder, 2 way radio
Weapon: Laser carbine
Robot Brain: Standard Model/M1 Int +4 Dex +2
Additional Software: Spot +4
Agility: 3
Initiative: 3
Armour: 4 +reflec
AC 17
SI 18
Str 12 (+1), Dex 14 (+2), Con -, Int 8 (-1), Edu 1 (-5),
Wis, Chr and Soc all 0 (-5)
Cost: 339,876.50 Cr Inc 20% discount.
This is a rough design based on the Maximum Security Robot found in the CT Adventure 'Research Station Gamma'. That one is 200Kg, so I reduced this one to 150 to resemble a smaller, non military, version. I made it tracked because the original has no description of locomotion, only that it could not right itself if knocked down. I envision some kind of tracks similar to the robot in 'Lost in Space'. In CT these were bad-ass. In T20 I think this is even worse. Using the vehicle 'v' character scale rules the +5 dice to attack and -5 dice to defence makes this really formidable. Well, my party may have to face one tonight, so will see how it goes.
Only a rough design as it's the first one I have done and there are still a few things in the sequence that I am not sure of. One thing I cannot figure out is the BAB.
Any comments are much appreciated.