
Father Anderson in Hellsing uses unlimited supplies of blessed bayonets as weapons.Gunslinger Girl: Triela has one either attached to her Winchester 1897 Trench Gun or sheathed at her waist (with her size making it a virtual sword).
Mobile Suit Gundam: Char's Counterattack has a particularly odd version with the Jagd Doga, whose beam saber has a heat knife "bayonet" ◊ attached to it. A unique example is the Gundam GP01 from Gundam 0083, which has a beam rifle with a "beam jitte", essentially just a small V-shaped beam blade mounted beneath the barrel, allowing it to block enemy beam sabers without having to draw its own. Some MS (such as the Zeta Gundam) can generate a beam blade from the barrel of their rifles, saving on space. Various mobile suits from the Gundam metaseries use bayonets, sometimes solid and sometimes beam, and occasionally removable to serve as an extra melee weapon. They are also used without being fixed as normal knifes instead, cue a Knife Fight. Golden Kamuy: Bayonets are a common sight in this anime, many characters, like the protagonist Saichi Sugimoto and the men of the 7th Division, are veterans of the Russo-Japanese War and thus proficient with the use of the bayonet. Shino Kuribayashi in Gate is a big proponent of this tactic, though she often is much too enthusiastic in bayoneting an armored opponent, sometimes even breaking a bayonet on her Howa type 64. Unusually for this variation, they're still used in the manner of proper bayonets: firing is their primary function, the blade is for when Cloud gets too close.
Final Fantasy VII: Advent Children: Yazoo and Loz's gunblades, the Velvet Nightmares, use the "molded onto the barrel" form of this trope.