noun
chronic latecomer; person who is always late
Colloquial and slightly humorous or critical term for someone who is habitually late. Often used among friends or in light complaints.
彼は遅刻魔で、いつも10分は遅れてくる。
He's a chronic latecomer, always showing up at least 10 minutes late.
遅刻魔の私が今日は一番乗りだった。
Even though I'm always late, today I was the first to arrive.
More formal and legalistic, literally 'habitual late offender'; 遅刻魔 is lighter and more colloquial.
Compound of 遅刻 (tardiness) and 魔 (demon, devil), giving a playful or critical sense of someone 'possessed' by lateness.