the way I will show you is with the translation, phonetic English characters and then the Japanese symbols that represent the word, in that order :)

Blood - chi - 血
Wizard - mahoutsukai　ー魔法使い
Compassion - theres not a general direct translation, but 'nasake'　probably does the job - 情け
Love - ai (the emotion) aisuru ('to love’）　－　愛　／　愛する
Empthy - kanjyouinyu - 感情移入
Sympathetic - doujoutekina or omoiyarinoaru (second one would be gay in a character name because i think it literally means something like "having sympathy for you") so, maybe in that case "omoiyari" could do it as "sympathy" but im not 100% sure on that one because I havn't seen it detached from the 'noyaru' suffix. 同情的な　　／　思いやりのある　／　思いやり

as for a character name that says wizard / master of the blood..

chino osesnsei (pretty literal that one, as "blood master")

inochino tennou (i was thinking you could use the word for japanese emperor, and life itself, to make 'emperor of life' which is what that says. because back in pre prime minister days japan was ruled under the emperor and he had control of the lives of pretty much everyone)

you can interchange chino and inochino if you like, so as they would form:
emperor of blood: chino tennou
and
master of life: inochino osensei

im only 98% sure that combining emperor with life or blood would create literate japanese meanings, because im not sure if tennou is already inferred as "ruler of Japan" and might look stupid if you can only accociate tennou with a country, but even if they dont, people with any japanese knowledge will still know what your on about ;)
you can change tennou with koutei if you like, which still means emperor, but isn't Japan specific.
actually, probably using koutei will be safer, and it has a better ring to it i reckon :)

oi! killumifuckinnated, i put time into that post, you could at least acknowledge it with a reply...

know that i have acknowledged it and feel slightly better

If we still had rep', I'd give you some.