Aloe erinacea
Native range: Namibia, severely endangered.
Known names: Locally known as "Goree", No common name.
Hardiness: Best above 40°F
Mature Size: May be 12" tall in YEARS, forms clusters 
Light: Very bright light, full sun
Water: Water when soil completely dries, don't water much during winter, try avoiding watering during the middle of extreme heat. 
Soil: Fast-draining. 
Dormancy Period: Winter
Pet-Safe: No
Plant Size: 2.5" pot
 
This beast is ferocious-looking but the spines are soft! It is a shame that this Aloe is so rare; I would love to see a garden filled with them. I've had this Aloe growing in my greenhouse for several years now and even though it can get down to 30°F in there, I wouldn't recommend it. 
Very limited.