Who is Don John in Much Adu about nothing

He is the illegitimate brother of Don Pedro. Don John is melancholy and sullen by nature, and he creates a dark scheme to ruin the happiness of Hero and Claudio. He is the villain of the play; his evil actions are motivated by his envy of his brother's social authority.

when i skim a text i look for anything i'm trying to find, like keys or clues or i just want to see if it is interesting to me.

explanation:

no its not a run on sentence however i think you meant wet suits not sours also a run on sentence would be like surfers surf all winter long in southern california by using wet sours to keep them warm and the live their all year long