Some knights love rushing into the glory of battle, ready to crush the skulls of their enemies! Tinker Knight is not one of those knights. He does his fighting before the battle begins, laboring on diabolical devices that do his work for him. The wrench is the tool of his trade, doubling as an engineering device and a melee weapon. Some are quick to dismiss Tinker Knight’s lethality... usually just before falling victim to one of his mechanical monstrosities!
Pros: Gregarious Demeanor, Hard Worker
Cons: Rough Hands, Works Long Hours, Always Out to Prove Himself
In the opening phase of the fight you can defeat Tinker Knight with one hit from the Mobile Gear. If you can't, simply dodge the wrenches he throws as he runs back and forth, then when he trips, stay away from him as he will throw a temper tantrum, throwing wrenches in all directions.
Once he gets into his mech, the Tinker Tank, jump on the large missiles or Shovel Drop the bouncing bombs he fires to get up to the spinning lance. From there you have two options for damaging him. The first is to start pogoing on his head. The second is to hit his red shoulder missiles back at him (each one does one full circle of damage to him when it hits). You can also use your Throwing Anchors without having to get on top of his mech.
Tinker Knight's mask appears to be based off of a welder's mask.
Tinker Knight is the only boss (other than the Enchantress) to have 2 phases (and thus two health bars) instead of one. This is probably a throwback to platformers of old where high-level or extremely tough bosses had multiple forms that needed to be defeated.
He is also one of only three bosses to have two themes along with the Black Knight and the Enchantress.
Tinker Knight's super-weakness to his own stage's item appears to homage Mega Man 2, in which Metal Man was similarly defeated in a single hit by his own weapon, the Metal Blade.
Tinker Knight's first form may be a direct reference to the Changeling boss from the NES title "Wizards & Warriors". His initial attack and behavior pattern is very similar and the room in which the battles takes place is nearly identical.
In Specter Knight's campaign, Tinker Knight subverts his initial weaker battle by actually incorporating the Mobile Gear, what was previously his weakness, into the fight against Specter Knight, along with a height adjustment mechanism to make things more difficult.
In the Japenese version he is called, Machine Knight.
Tinker Knight's second form(Tinker Tank) is probably a reference to the Soul Dozer from Scott Cawthon's "The Pilgrim's Progress" as they both share an identical appearance.