Hopeling

Stone Melee has a mag 4 hold attached to its best ST attack, and a 15-foot radius TAoE stun, as well as a 15-foot radius PBAoE knockdown. Don't get me wrong, I know from experience that WM has a lot of mitigation/control. But IMO, SM is just the king in that area. On the other hand, WM offers a lot more AoE damage.

Personally, I'm wary about slotting 3 full Obliterations, since Oblit has so little endurance reduction. If you want to keep the Oblits, I'd say to put Performance Shifter procs in Stamina and Quick Recovery.

I'd swap the slotting on Indomitable Will and Heightened Senses. Psi attacks are far less common than S/L/E/NE/F/C attacks.

/WP benefits more from building for typed defense than positional defense. Consider trading the Touch of Death for another Kinetic Combat set, the Gaussian's for 2 pieces of Rectified Reticle and 1-2 generic recharge IOs, and see if there are other places you can trade some positional for typed defense.

You have Hover toggled on in the build; do you plan to use it for moving in combat? Base Hover speed is much higher than it once was, but still slow enough that I find it annoying to use without a couple flight speed enhancements. Slotting Hover for defense provides minimal benefit, and is usually not worth bothering with except for set bonuses, or maybe if you're half a percent from the softcap.

You've got 6x 9% accuracy set bonuses, but the Rule of 5 only lets you benefit from 5 of them. You could replace the Endurance/Recharge in Weave with a Red Fortune: Defense/Endurance for better defense enhancement and not lose any set bonuses.

The Microfilaments cost way more than a plain 50 IO, give less speed enhancement, and are probably just generally not necessary. Fly and Afterburner are usually used in situations where endurance isn't an issue, and Hurdle doesn't cost endurance. A Microfilament is potentially useful in Swift if you use both Hover and running regularly, but personally I wouldn't spend 200m+ on it.

Those would be my main concerns, everything else looks pretty decent The knockdowns and stuns in Mace, combined with /WP, should render you near-invincible the way it does my TW/WP with similar defensive numbers. I assume you know you've included quite a few expensive enhancements, and one extremely expensive one? I'm not sure if "don't really have much of a budget" means you don't have much to work with, or that you don't have any limit in mind.

Gimme a bit to test this... silly 30s logout timer.

Hm, odd... my Longbow Total Core pets also spawn at 49. Hopped over to another character, and Cimeroran Core Superior is also 49. Another character, with Rularuu Total Core... 49. Yet another, IDF Total Core... 49. OK, last character with Lore, Warworks Total Core... 49. Well... huh.

I'd have sworn they spawned at 50, but then, I'm not sure I've ever specifically looked before. I believe MM pets spawn at a different level in Incarnate trials, so it would be worthwhile to test this in a trial also, which I did not do.

I apologize for my earlier comment, it was quite unnecessarily rude.

First, some general thoughts on building with /regen. As /regen you already have a great deal of self-healing and regeneration, but very little mitigation. Set bonuses, however, give a flat amount of either, and don't care how much you already have. +100% regeneration from set bonuses is quite significant to a set like /Invuln that doesn't have much healing to start with, but it's a drop in the bucket to /regen. This means, for survivability, you're better off building for defense (for mitigation) and recharge (to have your heal buttons up more often), as Santorican said. High recharge also has the nice side effect of enabling a better attack chain.

More specifically to the build you posted, the Rule of 5 means that some of your set bonuses are completely wasted, and doing nothing for you, specifically the +1.87% hp set bonuses, of which you have 9. Mids can show you Rule of 5 violations in Window -> Sets & Bonuses. In fact, with Dull Pain and accolades, you should be able to cap your hp with very few +hp set bonuses at all. As long as I'm on that note, you should account for accolades in Mids if you have earned them, and you should work on earning them if you have not

Your powers are underslotted for endurance reduction. Putting a few more slots towards that, combined with Quick Recovery and the innately low costs of Claws, could allow you to do without recovery set bonuses and Physical Perfection. Follow Up should be slotted as an attack, not a tohit buff, meaning it needs accuracy and damage. Your attacks are somewhat underslotted in general - even a cheap triple from Crushing Impact or Multi-Strike can often round out an attack's enhancement values nicely once you have the set bonus from it that you desire.

Diamagnetic is an unusual Interface choice, especially for a scrapper. The DoT Interfaces are almost universally the best.

I doubt it's a bug. Enhancement boosters specifically only work on IOs, which ATOs are not. Even the current store-bought attuned enhancements, which mimic existing IO sets and are even considered to be the same set for set bonuses, cannot be boosted.

Well, my Beam/Time corruptor rarely feels even a hint of synergy. Beam Rifle (and to a lesser degree just being a squishy) makes me want to stay at range so I can use my cone, but Time Manipulation wants me to be in melee for my debuff aura. They are also both very active sets, so it's difficult to make full use of my pew pew while also keeping up my buffs and debuffs. The only meaningful overlap or synergy they seem to have is that Beam/ provides some -regen to cover /Time's hole in that area.

That said, it's not a bad character, I actually like him a lot. The sets just don't play nice together.

Why would it need to be improved? It's already one of the most -

Mids thinks the resistance is unaffected by endmod, but in-game detailed info appears to disagree: my Blaster's Consume says it gives 73.85% resistance with 47.7% endmod. So presumably, with overslotting or an endmod alpha, you could reach +100% enhancement, for full immunity.

Still, I really can't think of any plausible situation where 100% end drain resistance would save you, but 90% wouldn't.

The Battalion is literally flying at us from outer space, as far as I'm aware. So that probably rules out them being extradimensional.
We know so little so far that, sure, maybe the Shard will tie into it somehow. But I doubt it will be the source. I'd guess they used that phrase on purpose in the badge text just to get players theorizing - or maybe they hadn't yet decided or were planning something else when that was written.

He 3-slotted Boxing... with Rope A Dope... including the stun/range. This HAS to be a joke.

Can you even get immunity? I thought it capped at 95%. At least, my recovery resistance in combat attributes caps at 95% on my elec/ tank.

In any case, the difference between 90% end drain resistance and full immunity should be academic in any situation I can think of.

Both regen debuffs are flagged Ignores Buffs and Enhancements according to in-game detailed info, so presumably no.

All the ATOs are unique. You can't even use a normal and superior version together AFAIK.

There's a Suggestion forum, down in the For Fun! section.

Anything with knockdown or other control to give RttC time to heal you up works nicely with /WP. TW as mentioned is outstanding, and Battle Axe, War Mace, and Stone Melee should all be nice as well. Those would be my top picks.

A /WP build IMO gets the most benefit from defense, even if you don't reach the softcap (which is rather difficult on a brute anyway). /WP doesn't rely on never getting hit the way something like /SR does, you only need to reduce incoming damage below your regeneration rate. My /WP brute built for 32.5% defense, and my /WP scrapper is not much higher. This allows them to softcap with one purple inspiration or one good team buff, although I rarely find even that necessary to survive most things. +HP is also good to build for. Building for regen gives minimal returns because you already have so much, and building for resist is difficult to even do because resistance set bonuses are small, rare, and often expensive.

As Zombie Man noted, you keep your level 20 power as far down as level 15. Even Posi 1 lets you keep that (unless your team leader is too low I guess). There are no TFs that exemplar you below 15, and not many flashback arcs. So you will rarely, if ever, find yourself without Mask Presence. Even when you do, it is not so build-defining that you can't play without it; after all, you did so for the first 23 levels.

Yes, that seems to fix it. "Unknown command" is an odd error to return for that situation though.