
1) Animated series villain 2) Fictional dictator 3) Fictional turtle 4) Generic dog 5) Light tanker 6) Main enemy in the Mario games 7) Mario character 8) Relative of Rex 9) Spot alternative 10) Style of truck 11) Video game boss
Found on
https://www.crosswordclues.com/clue/bowser

1) Fido 2) Pooch
Found on
https://www.crosswordclues.com/clue/bowser
[character] His ultimate goals are to marry Princess Peach, defeat Mario, and conquer the Mushroom Kingdom. Since his debut, he has appeared in almost every Mario franchise game, usually serving as the main antagonist. Bowser has been called `the most successful video game character`. Currently, Bowser is voiced by Kenny James. == Concept a...
Found on
http://en.wikipedia.org/wiki/Bowser_(character)
[tanker] A bowser is a generic name for a tanker of various kinds. == Water == The term bowser is used by water companies in the United Kingdom to refer to mobile water tanks deployed to distribute fresh water in emergency situations where the normal system of piped distribution has broken down or is insufficient. The term rose to prominenc...
Found on
http://en.wikipedia.org/wiki/Bowser_(tanker)

Bowser is British slang for an unattractive woman.
Found on
http://www.probertencyclopaedia.com/browse/ZBA.HTM

a gasoline pump at a filling station.
Found on
https://www.infoplease.com/dictionary/bowser
No exact match found.