彼

1. pronoun he; him
2. noun boyfriend

あれ

1. pronoun, usually in kana, indicating something distant from both speaker and listener (in space, time or psychologically), or something understood without naming it directly that; that thing
2. usually in kana, used to refer to one's equals or inferiors that person
3. usually in kana then; that time
4. usually in kana that place (over there)
5. noun, colloquial, euphemistic, usually in kana, oft. written as アレ down there (i.e. one's genitals)
6. colloquial, euphemistic, usually in kana, oft. written as アレ period; menses

かの also 彼の

1. pre-noun adjectival, usually in kana that well-known ...; the one and only ...
2. formal, usually in kana that; those; the