So far there are four Daleks. (ordered by rank & class, lowest first.)
.Guard dalek, This Dalek is a simple "drone" most commonly found near a supreme Dalek. Their sole purpose is to eliminate all threats near the supreme Dalek. You can tell the guards apart from the default by it's black/ dark grey head piece, (which means it's a guard.) They are the lowest class of Dalek in this mod so far. They have 25 health & 0.20 speed. The best vanilla Minecraft weapon to use is either bow or diamond sword.
.Default Dalek, This is the standard modern Dalek & will often spawn near a higher class Dalek or independently. Like most Daleks they will often attack the player or villagers. At times they may also attack pet animals such as wolves. They have roughly 30-25 health & have a standard speed. The best vanilla Minecraft weapon is a bow. It is advised that you do not come into firing range even though they do little damage they can sometimes pierce through armour as tough as diamond. Do not engage if there are more than 2 to 3 Daleks in a group. (You will die!)
.Dalek sec, This is one of the most dangerous Daleks in the mod so far! They will spawn standard Daleks to help them out when an enemy attacks. Please be very cautious when engaging this Dalek as a lone Dalek sec could rapidly turn into a fully armed Dalek army. They have slightly more health than the standard Dalek but are also faster. At times they may also leave a parting gift of primed TNT. It is best to leave this Dalek alone unless you have advanced redstone weaponry such as rapid fire cannons or TNT cannons.
.Supreme Dalek, Although this Dalek is not mean't for combat it is the most dangerous Dalek in the mod so far! Anything that dares to oppose this killer will be swarmed by Dalek guards never to see the light of day again. They will light fires everywhere & launch heavy Dalek assaults on their enemies. Although they don't attack villagers they are the biggest threat to humaniod creatures. They aren't designed for combat but are more of a commander. Do not go anywhere near a supreme Dalek unless you have the fire power to destroy at least 10 to 20 Daleks.