This is close enough to what a Dosu would be like, if anything with extra magical and physical defense to avoid killing them with ease, and we know how RPGs are. Even a bunny, that shouldn't be able to kill a full armored paladin, is boosted up in those games for the sake of fairness. Still as you see, she has shitstatic HP, so without the RPG logic backing her up, she would be the typical glass cannon that Dosus are.
Most of the Yukkuri in the game are basically the GoS version of metal slimes. Non-threatening, hard to kill, and like to run away. Worth a lot of experience if you can kill them.
Also, this image isn't of the Yukkuri in the video that Clark linked (that one has 20 HP).
Basically all of the Yukkuri have high resists (they are immune to all forms of magic, and almost immune to physical attacks) and have perfect dodge (a chance of evading all attacks above and beyond the normal evasion stat).