In the Batman Miniatures Game, the Penguin crew is all about money, resources and using them as best as you can to get the job done.
Oswald himself much more dangerous than he looks. Armed with an Umbrella Cannon and Umbrella Blade, he can dish out a lot of damage when he needs to and even has a bulletproof vest under his fine jacket for extra protection. He real strength though is getting his crew and others to do the work for him.
Penguin is Charismatic and a Lord of Business so can hire more Free Agents than most, better equip his own men and even take extra Loot Objectives.
The Penguin thugs are cheap but that also makes them numerous. Throw enough men at a problem and it can be solved. The Penguins extra equipment reserves let him arm his hordes well though. Assault Rifles, Automatic Guns and Grenades are not uncommon to see in the middle of the Thugs.
If the hulking Sickle joins him as a Sidekick, he can also bring along some more Elite Penguin Thugs when the extra skill is wanted.
Instead of hordes of Thugs, Penguin also has the options of hiring almost any Free Agent he needs with his Charisma and $$$ letting him choose people like Deadshot and Deathstroke on a regular basis as deadly assassins.
A couple of very good choices though are Catwoman and Mr Freeze. Freeze adds to the ranged threat of the well armed crew while Catwoman can jump around when your opponent is dealing with all the Thugs. Both also have Loot on their mind so the Penguins extra Loot Objective can help you bump up your VPs.
Overall, a Penguin crew is about strength in numbers. Either the number of bodies you have at your disposal or the number of deadly weapons and skilled assassins you throw at your opponent.
A great starting crew with several options and ways to play for the more experienced players.