glass cannon

From the fact that they are powerful (similar to a cannon) yet are easily breakable (similar to glass).

glass cannon (plural glass cannons)

1. (especially roleplaying games, board games, video games) A character or unit with strong offensive power but weak defensive capabilities.
   • 2009 May 23, Eugene Barrett, “Re: DCSS:: need advice”, in rec.games.roguelike.misc‎ (Usenet):

     Deep elves die easier than most other races - glass cannons to an extreme extent.

   • 2012, Lizzie Stark, Leaving Mundania: Inside the Transformative World of Live Action Role-Playing Games, Chicago Review Press, →ISBN, page 238:

     A min-maxer might create a "glass cannon" character—one with lots of awesome offenses but next to no defense.

   • 2018 December 9, Drachinifel, 21:35 from the start, in The Drydock - Episode 019‎, archived from the original on 10 September 2022:

     Now, both sides had built up their fleet quite extensively with very fast, kind of glass cannon-type destroyers and cruisers in the run-up to the war, buuut the French fleet, at the beginning of World War II, was very definitely - below capital ships, was very definitely a fleet of glass cannons, whereas the Italians, although they had their own share of them, had a number of pretty good designs, like the Zara-class heavy cruisers, so, in destroyers and cruisers, I think the Italians definitely have a qualitative advantage, at least for a good portion of their ships […]

   • For more quotations using this term, see Citations:glass cannon.

• (antonym(s) of “gaming”): tank