In Titans Uprising, titanwing Bonestormers change relatively little from broadwing Bonestormers, but the changes they do get are interesting. A reasonable guess as to what the Titanwing form of this dragon could come from looking at the Titanwing forms of its parents. Both of these dragons have Titanwing forms in SoD, whereas the Bonestormer doesn't. This dragon is a hybrid of the Stormcutter and the Boneknapper. The Titanwing Armorwing might also replace the odd claw pieces of metal at each wingtip with something slightly more intimidating, such as broken spearheads or sword blades. The Titanwing Armorwing would therefore have intact horns (again, all broadwing Armorwings have one broken horn), a larger underbite (possibly with some larger or more differentiated teeth than the broadwings have), and more organised/more distinctly segmented armor (perhaps vaguely resembling late medieval/renaissance plate armor.) To further drive home the similarities between it and the Boneknapper, the Titanwing Armorwing may gain some form of artificial tail club, such as a broken mace head. As a Titanwing, the Boneknapper gains a larger underbite, intact horns (all of the broadwings have one broken horn), and more organised armor, complete with a larger tail club. That means that their Titanwing growth stages should have some traits in common. This dragon has a close relative in the form of the Boneknapper. Alternatively, the Titan could have two rows of back spines (Monstrous Nightmare), a "Lava Tubes" pattern (Gronckle), extra horns/split horns (Monstrous Nightmare), and a larger pair of tusks in the Lower Jaw (Gronckle.) It could also potentially gain an extra layer of defense by growing some form of armor in between the back spines.
The Titans Uprising Version gains a network of spike like bumps all over its body, larger horns, and a pattern vaguely reminescent of stone transitioning to lava. This presents two options when it comes to its Titanwing stage: the Titans Uprising Titan, and a titan with characteristics of both parent species. The Abomibumble is a hybrid of the Gronckle and the Monstrous Nightmare. With that said, what could other Titanwings that haven't yet shown up in School of Dragons look like? As of a few months ago, we recieved word that a Titanwing Stage for the Silver Phantom will fly into campus in the future.