OK, then...
I think I know what you mean, if you put it that way.
The words are names/proper nouns, so they don't have tenses. But in Latin there are genders (m, f, n) for each noun, and the adjectives which agree with them have endings specific to these genders
eg. miser puer = wretched boy
misera puella = wretched girl
Your word "legio" means "legion" - I don't know whether you meant "legio" or "lex", which means "law", because your terms sound like legal jargon.
"legio" is feminine, which means that the adjective "malus, -a, -um", meaning 'bad' would take the form "mala" with this noun.
As for 'malefactor', I've never heard of it...my closest guess would be some supine construction from "malefacio, -ere", 'to harm', or something related to "malefactum, i., n." (wrong, injustice).
Hope that helps
Weisy