Green’s Dictionary of Slang

(US) one who never takes the blame and invariably has a quick excuse for their faults and failings.

[1913		El Paso Herald (TX) 18 June 9/6: Even Alibi Ike, the champion adjuster of low, brutal facts to rosy ideals, would be at a loss to explain].
1915		R. Lardner ‘Alibi Ike’ Coll. Short Stories (1941) 35: He never pulled a play, good or bad, or on or off the field, without apologizin’ for it. ‘Alibi Ike’ was the name Carey wished on him.
1917		St Louis Post-Despatch (MO) 27 June 11/3: Alibi Ike, High Keeper of the Scared Excuse, [...] annunced yesterday that another little Excuse had joined the growing family in Ike’s custody. All Excuses [...] are of the genus Jinx.
1920		Eve. Star (Wash., DC) 9 Apr. 18/3: [advert] ‘Alibi Ike’ The high priced tailor will keep on handing you these cock-and-bull stories about the shortage of woolens [...] just so long as you pay his fat prices.
1926		Wood & Goddard Dict. Amer. Sl.
1933		W. Winchell On Broadway 11 Apr. [synd. col.] Baseball Slang. [...] Alibi Ike — Player who makes excuses for poor fielding or batting.
1989		H. Rawson Dict. of Invective (1991) 14: Famous fictitious ones, e.g. [...] Alibi Ike, babbit, goody two-shoes, pander, and Peeping Tom.