Good 500 point list
By - cambear16
Unfortunately, Bikes can only be run in squads of 3 or more. Fortunately, they cost too much to really use at 500 points anyway. With a Bike Captain, a squad of 4 custodian guard, and one Vexilus Praetor (the banner holder guy; optional assembly included in the custodian guard box), you should be just a bit under 500 points.
The Bike Captain with the Superior Creation warlord trait is monstrous in low point games, too. Very fun to facewreck with.
SC with spear and misericordia, 3 Guards, 1 with shield, 3 bikes is also 500
There are a bunch of different lists you can make even with those two boxes, plenty of shield hosts and relic to consider. However, if you want to field a Captain on bike, you won’t be able to field a unit of bikes, as the minimum number for a unit of bike is 3 (the number of bikes in the box), and making the Captain means you only have two left.
But those are only rules, if you are playing a friendly game, don’t hesitate to ask your opponent if you can field a unit of 2 bikes, doesn’t hurt to try and the unit is fun to play with (although not that good for its price)
As a minor addition to your post, there is a way to take a 2-bike unit in matched play: Understrength Units.
Not that I would recommend doing so, since those require a 2 Command Point Auxiliary Detachment and that cost is too steep at 500 points, just calling out there is a fully valid way to run a 2-bike unit.
You’re right! Completely forgot about this one :D
2 bike Shield Captains and a squad of 3 Custodian Guards for some fun cheese
SC on bike is really good in 500 I experienced. I do Crusade with SC on bike, 3 Guards with shields and 3 Venatari. They work fine. You can make 2 SC on bike en 3 Guards, 2 with shield and 1 with spear.