This is an old build I used back before UVHM came out, and was optimised in DLC4 with the introduction of the Laser Disker. Wilhelm may not be the best user of Tediore weapons in the game, but he’s the most consistent, and that’s mainly because of the Dreadnought (Right/red skill tree) capstone, Overcharge. But, that’s not all of why he’s so good at Tediore chucking.
To begin this guide I’ll use the TPS skill calculator for the build - http://thepresequel.com/Wilhelm/500000000005005151505150051515551
This build is mainly focused around increasing magazine size, reload speed, and survivability in that order. Next I’ll list the gear.
Weapons:
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Laser Disker. The hardest hitting Tediore weapon in the game per reload throw. Wilhelm is the explosive expert and laser specialist of BLTPS and this weapon just feels like it was made for him, even more so when he has access to two magazine size increases with one being specifically for laser weapons.
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IVF: This is a great backup weapon for those “just in case” moments, even with all the ammo regen Wilhelm has access to he also has a lot of reload speed increases and just might run out of ammo every once in a while, this is for those moments.
Preferred parts: “Hefty” prefix, Bandit grip. NOTE: A Hefty prefix will do more damage per reload throw than a “Refill” prefix, try it yourself. -
Frigida or Cryo Taser: Frozen enemies take more damage from explosions and melee attacks, which also means a double dose of damage from Power Fist (Triple on a crit) and these are the two best freezers in the game. The Frigida is essentially the new Slagga, but I prefer the Taser for it’s accuracy downrange. NOTE: Power Fist receives all buffs to explosive damage, punch frozen enemies!
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88 Fragnum: The new Unkempt Harold may not be what it once was, but it’s still a solid weapon and on a character built for exploding enemies it’s almost perfect. Great close range accuracy means freezing your enemies then shooting them point-blank in the face for twice the buffs from Cryo. Great for when ammo is low or when that Tediore chuck is unnecessary overkill, but does compete with the Taser for pistol ammo.
Items:
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COM: Blue rarity (High Tech) Blaster with +6 in Laser Focus and +5 in Welcome to the Gun Show. This COM is specifically focused on improving Laser Disker performance, but Welcome to the Gun Show provides nice all-round buffs. The stats are unimportant here, it’s the skill points you want.
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Oz Kit: Purple rarity Bomber Oz Kit. Tediore reloads gain damage increases from “grenade damage” so this Oz Kit seeks to further improve overall damage from this build’s main damage source. Also, a chance not to consume grenades is an awesome thing to use, take advantage of it and throw grenades every time you’re in the air, keep jumping! Preferably explosive element for big butt slams, but the stats are more important than the element.
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Shield: Reogenator. Adaptive shields had a bad reputation in BL2 but they’re done right by in TPS and Wilhelm’s Hazmat Containment System makes him a particularly good wearer of them. Stack that synergy with Hard to Kill, Emergency Response and Divert Power and you’ll have to try to get killed., and with Kinetic Armour and Termination Protocol you can kill enemies just by standing still. Wilhelm is god.
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Grenade: This one’s entirely up to you, but I’d recommend using a Quasar to pull enemies into your line of fire and strip heavy shields.
Now onto the build breakdown. Firstly you’ll notice I have one leftover skill point, this one can go wherever you want it and if you don’t want Shock Absorbers it’s not mandatory to this build, I just think it’s cool. Man and Machine s a good alternative for extra tankiness. Some people also don’t like Termination Protocol, instead one point can go into Fortify to advance down the tree. Aside from skills boosted by the COM and defensive skills mentioned above, the two most important skills for this build are Auxillary Tanks and Overcharge. We take Auxillary Tanks for the cooldown not the duration, and this is where Zero Hour comes in to further increase the already insane amount of survivability. A few seconds after activating Wolf & Saint Overcharge will activate, as soon as this happens immediately recall Wolf & Saint. A large portion of the cooldown will be refunded and Auxillary Tanks will further that, now we take advantage of 10 seconds of ammo regeneration and increased reload speed to chuck our boosted Laser Disker. Fire one shot, reload, repeat. For heavier and mobile enemies, freezing them first with the Frigida or Taser will keep them still so you can land a direct hit and cause them to take increased damage from Tediore throws. Tediore throws can land critical hits, which are also buffed against frozen enemies, this is why we take Targeting Scope.
With this build you can Tediore throw against mobs as well as bosses, and most bosses wont withstand more than one throw even before Cryo. This is also a fast way to complete the Badass Round of the Holodome, although with so many tough enemies ammo may run low even with extreme amounts of ammo regen so the IVF and Fragnum will see a lot of use, try to keep your Laser Disker for the baddest of badasses. Even if there are no enemies around keep spamming Overcharge to top up your ammo, only ammo for the weapon type you’re holding will be refilled so switch often to ensure that all ammo types are frequently topped up when needed. The trickiest thing about this build is learning how long it takes for your weapons to reload and the trajectory and speed of the thrown weapon, made even more difficult by the constantly changing reload speed, but once you learn to adjust accordingly you wont waste too many throws. If you’re not sure about hitting your target, close the gap and freeze them, there’s a lot of survivability on this build to ensure that you’re able to tank heavy damage while fighting at close-mid range.
Thank you to all who read, reviews and general comments are welcome and appreciated whether critical or acclaimed, and I’m no stranger to critical acclaim either 
I hope this helps anyone looking to play as Wilhelm, and to any who say he’s the weakest or least interesting toon in TPS I invite you to try this build out for yourself 