Strange activity

i have a guy in my guild he is lvl 50.. in just 2 days he unlocked Blaze(5stars????) , Chirrut , Jyn , Cassian Andor , Old ben , Maul , Kylo Ren , K-2so ( i checked right away and his k-2so was 4stars i thinh he unlocked at 3 stars) , Echo , Lobot , Ayala , Jawa Enginner.He also has Dark sidius 5 stars, Finn 5 stars, Poe 5 stars, ig-88 5 stars, Windu 7stars! , royal guard 4 stars , Bane 6 stars, geonosian spy 6 stars, dooku 6 stars, shoretrooper 4 stars, Wedge and So much more. he is lvl 50 how is this possible? I know most of them if not all are in the chromium packs but this is really weird!!Also in guild activities he is always on the bodom . most of his characters are also lvl 50 with no gear at all. you believe this guy cheats? if not then he is so lucky with his chests and he pays a lot of money which is fine if all the characters are legit...