Ok so duchess won't be nearly as strong as duke so let's start with her also duke is the leader of my au there is no emperor

Duchess

Dual chain whips: she has two energy chain whips which can easily break heavy armor and shields they can also delfect cannon shots

Quad laser tentacles: just like her non-upgraded self she has four laser tentacles but they are a lot more armoured and the ends are a complex mix of juggys shockwave cannon and a destructor laser they fire large red beams that can easily rip a titans side off these also can pull a smaller titan and throw them like a baby they can also paralyze titans

Battle mask: she has two metal pieces in the sides of her face which when activated release a metallic mask that blocks any sound or tv based attack it has its in "eyes" which track her eye movements to accurately show her expression through the mask this mask can tank shockwave cannon shots

Dukes upper body appearance

Battle gaults: he has two gaults over his hands but they might as well be his hands because their sealed on they have 5 sharp claws which serve as fingers these have two modes fist and blaster which I'll talk about later the fist mode is self explanatory just his normal fist but he can punch with enough force to rip 5 obliterators in half without being charged up and when charged up can tear through a carrier

Hand blasters: this is the blaster mode I was talking about when fired red bolts come out which can shred through a armda in seconds this can be rapid fired

Energy spear: he has a energy spear which he carries on his back it looks mostly like a normal spear but it has a large static warp propulsion engine on the part before the blade which looks like a modified specialist sword this spear can quite easily tear through 2 cities without even slowing down and that's just with throwing it can you imagine what a jump stab would do

Energy cores; he has two energy cores on his shoulders and one on his chest the chest one the chest core looks like a red core penetrator with a lot of differences it has 6 legs the four wrapped around his chest and two placed deep within his shoulder armor the legs are heavily armored this core gives him a few abilities while the two on his Shoulders allow him to use the blasters

Core orb: he fire large red orbs from his core these can literally vaporize obliterators with a single shot

Core destruction laser: it takes awhile to charge but when fired it can basically vaporize 16 carriers at once

Conversion: he has the ability to use some energy from his gaults to mind control a titan this turns the titans energy orange and they obey him and duchess only but it can be stopped by a paralyzing gun

Dual energy swords: as secondary weapons to his spear he has two energy swords on his hips which he can pull up anytime he wants with a flip of the wrist these blades are strong enough to slice through 4 sky scrapers like a hot knife through paper

Photon railgun: he has a large photon railgun on his arm that looks similar to Overseer's cannon and tcms railgun mixed this cannon fires large red bolts which can one tap carriers

Lower half appearance

Warp rings (on legs): he has two complex looking static warp rings on his legs that allow him to move around quickly and warp