The useless nonentity is David Mundell, the Tory who is supposed to represent Scotland in the government Scotland did not elect.
Except that, by taking part in the UK General Election of May 2015, the Scots did elect the current Government. They may not have voted for the party currently in power, but by taking part in the process, they legitimised the result.
As for Mr Mundell, I wouldn't know him from Adam, and since my interests lie more with the relationship between Cardiff and Westminster, rather than either's with Holyrood, I won't make a judgement.