Character models are divided into two categories - the best and the rest! In the case of Orcs these are Warlords (the best) and Big Bosses (the rest). The maximum number of characters an army can contain is determined by its agreed points size as shown on the example chart below. Bear in mind that this is only an example chart - the actual chart for each specific army may well vary in detail.
Army Points Value | Max. Total Characters | Max. Lords | Max. Heroes |
Less than 2,000 | 3 | 0 | 3 |
2,000 or more | 4 | 1 | 4 |
3,000 or more | 6 | 2 | 6 |
4,000 or more | 8 | 3 | 8 |
Each +1,000 | +2 | +1 | +2 |
So, in this case, a 1,500 point army could include a maximum of three characters, of which up to all three could be Heroes and none can be a Lord. In a 3,500 points army there can be a maximum of six characters with up to two Lords. The army doesn't have to include the maximum number of characters and doesn't have to include Lords at all.